It's Christmas 1960 and the Trotters are settling into their new flat in Sir Walter Raleigh House, Peckham. In this second prequel to Only Fools and Horses, 16-year-old Del (The Inbetweeners' James Buckley) has left school. Very much the fledgeling wheeler-dealer, he's busily flogging 45s straight off the back of a boat from America and getting engaged to half of sarf London in the hope of creating some lustful opportunities. Rodney's still a baby, of course, and his father, the roguish but debonair Freddie "the Frog" Robdal (Nicholas Lyndhurst), has been temporarily detained. In Wormwood Scrubs. The first serving of John Sullivan's Rock & Chips last January gave many critics indigestion but it went down well with viewers, who didn't mind the lack of belly laughs. There are some cracking performances here, too: Robert Daws is splendid as a sleazy cinema manager and Paula Wilcox as Reg Trotter's mum surely must be closely related to Catherine Tate's Nan.

I met Ronnie Corbett once. It was during my time as a gossip columnist on this paper. I spotted him at a party and, somewhat starstruck, decided to approach and introduce myself. He was all right, I suppose, though not terribly polite. He didn't, he sniffed, read The Independent. More of a Telegraph man (must be the jokes). Anyway, he's 80 now, and BBC2 has devoted a few hours of scheduling to the occasion. First up was a rerun of The Two Ronnies Christmas Special from 1984, and then Being Ronnie Corbett, a fawning programme of dedications. We got Matt Lucas and David Walliams, Catherine Tate and Michael Palin, Miranda Hart, Rob Brydon, Stephen Merchant, and Bill Bailey. Even Bruce Forsyth put in an appearance. They all heaped praise on him, and deservedly so. After all, it wasn't them he was rude to at a party, was it? And he's jolly funny, or used to be, back in the day. Repeated clips of The Frost Report and The Two Ronnies were testimony to that. His more recent stuff, less so. That Extras sketch is great, of course - "a bit of whiz, you know? To blow away the cobwebs" - but, really, Ronnie, Little Britain? "I was just grateful to be included," was his explanation. And, to be honest, I believe him. This is a man whose raison d'être has been making people laugh; of course, he wants to keep up with the times. Why else would he agree to cuddle a half-naked Lucas in the least funny show on television?

Season's greetings from Auntie's Reckless Nostalgia department, where Ronnie Corbett is sitting in a corner, tweaking his glasses as he panic-knits gags for this 80th birthday bun-fight. Intended as a celebration of the minute octogenarian's career, it's a peculiar affair, with famous guests (Richard Wilson, Rob Brydon, Catherine Tate) scattered like novelty pencil toppers among wilting sketches about dongles and trapped wind. Still, there's an air of genuine affection to proceedings, and Corbett's way with a one-liner remains one of light entertainment's most enduring marvels. "I have my own treadmill at home. I'm only doing widths at the moment . . .")

Charming and entertaining documentary Being Ronnie Corbett pays homage to the nation's favourite vertically challenged comedian.

Ronnie celebrated his 80th birthday at the start of this month, and he is in sparkling form here as he looks back on his career spanning half a century.

It goes from his early days feeling up Danny La Rue's boobs during West End cabaret shows, to his snorting cocaine off a toilet seat in Extras, via his famous chair where he delivered his signature shaggy dog stories.

Fellow comedians including the likes of Rob Brydon, Matt Lucas, David Walliams and Catherine Tate queue up to give him a not insubstantial verbal pat on the back.

What could be more festive than an old-fashioned light entertainment special? Apart from Santa eating sprouts, not much. This one-off all-star sketch show marks Ronnie Corbett's 80th birthday earlier this month and sees him joined by a host of younger comics including David Walliams, Matt Lucas, Catherine Tate, Harry Enfield and Miranda Hart, who has said that she studied the effect of Corbett's little looks and head turns to the audience. There's even a reprise of Corbett's signature rambling armchair anecdotes, written by Ben Elton, plus music from Charlotte Church.

Running nightly this week are this year's seasonal shorts little crackers from Sky One, which annually tries to make up for the dearth of decent original drama and comedy from January-November by gorging us with a festive selection box featuring some of the best-known names in the business.

This time they've got the likes of Victoria Wood, Catherine Tate, Stephen Fry, Kathy Burke, Julian Barratt, Jo Brand, Bill Bailey - oh, the list goes on, basically anyone who's ever appeared on a panel game is either appearing in, writing or directing one of these 12-minute films, mostly based on autobiographical stories about their childhoods.

And like a selection box, there are a few yucky praline noisette ones. David Baddiel's film is as annoying as he is, though it does feature a good impersonation of Record Breakers star Norris McWhirter by Alastair McGowan, who must have been delighted to get a chance to do an impression he probably last did as a child. Chris O'Dowd has a dull grumpy Santa story and Dawn French oddly casts herself as the late Queen Mother.

But there are some nice strawberry cream ones too: Victoria Wood's is a sweet, nostalgic tale, Julian Barratt's teenaged heavy metallers are quirky and Kathy Burke's memory of meeting Joe Strummer is endearing. Anyway, they're all over so quickly that even the ho-hum ones are watchable enough - shame though that for Sky, decent original programmes come barely more than once a year.

Christmas may have peaked too soon because Little Crackers (Sky1), a set of short films loosely based on the theme of childhood and featuring top comedy writer/performers, got off to a, er, cracking start with a brace of offerings from Victoria Wood and The IT Crowd's Chris O'Dowd.

Wood's Lancastrian meander down a dark memory lane was touching and familiar, O'Dowd brought a cheeky lump to the throat with a tale about a lad who always wanted Subbuteo yet got lumbered with a hand-me-down Barbie (with moustache).

As an idea for a Christmas series, it's right on the stocking. Kathy Burke channelling X-Ray Spex and The Clash is still to come and tonight's offering from Catherine Tate, featuring a shock-headed ginger of painful shyness who wees herself at frequent intervals is laugh-out-loud funny.

You have been warned.

The cream of the British comedy crop come together for this series of brand new comedy shorts for Sky1 HD. Following a season of dramatic 10 Minute Tales last Christmas, this December it's Comedy's turn to shine in an anthology of short films, written by and featuring 12 of the nation's biggest and most loved comic stars. With the likes of Stephen Fry, Catherine Tate, Julia Davis and Bill Bailey flexing their creative muscles they're the perfect bite-sized morsel of entertainment for you and your family this Christmas. Tonight it's the turn of Victoria Wood and Chris O'Dowd who get the season underway.

A nightly season of short autobiographical films featuring some of Britain's best comic talent opens tonight with stories by Victoria Wood and Chris O'Dowd. Dawn French, Stephen Fry, Bill Bailey, Kathy Burke, Jo Brand and Catherine Tate are among those writing, narrating and starring in these seasonal dramatisations of their lives, often with stories recalled from their childhood. It's a bit hit-and-miss. Wood's is on first, though hers is the only story not to feature a younger version of herself. The IT Crowd's O'Dowd follows with an amusing story of why as a boy he thought Santa was a "big weirdo".

Catherine Tate relives childhood for Christmas telly

Catherine Tate is one of a handful of big comedy names behind Sky One's series of short films in the run-up to Christmas.