Sky's star-filled success story of recent years has been this yuletide anthology, a sprinkling of cheer across the festive schedules. Two of the autobiographical shorts have even sired fantastic series - Kathy Burke's Walking and Talking and Chris O'Dowd's Moone Boy.

The third series opens by whisking us back to the swinging and sexist Sixties. Baby, Be Blonde sees the young Joanna Lumley (played with wide-eyed charm by newcomer Ottilie Mackintosh) contending with haircuts and wig-fittings before her jittery first assignment.

Daniel Ings is uproariously awful as a photographer who marshals his models like animals ("Put the hippo at the back"). And Lumley, making her directorial debut as well as a cameo as a dragonish fashionista, reveals the facts behind the fun in a 15-minute look behind the scenes. The next Little Cracker, featuring Rebecca Front, is on Sky1 tomorrow.

The swinging, sexist '60s are brought to life by Joanna Lumley in her vaguely autobiographical debut behind the camera, launching another series of short comedies for Sky1. The story of young Joanna's (Ottilie Mackintosh) journey from eager-to-please young model to wiser, bolshier woman is a slight one, leaning heavily on the marvellous, hits-heavy soundtrack and featuring a couple of odd lighting decisions from the tyro director. But it's gently endearing and Mackintosh is a winning lead. Shame, then, that the final 15 minutes is taken up by a 'making of' which, quite frankly, we could have lived without. As charming as Lumley undoubtedly is, the levels of luvviedom hit toxic in short order.

A welcome return for the seasonal series of cheery autobiographical shorts, each one bringing to life an anecdote from the youthful days of a sackful of star celebs. Pulling the first of this year's Crackers is national treasure Joanna Lumley, who draws on her modelling roots to play a magazine editor taking charge at a photoshoot, with newcomer Ottilie Mackintosh facing the daunting task of posing as the 19-year-old Lumley.

The seasonal return of the Little Crackers series, which features comedy shorts based on the autobiographical recollections of various actors and comedians. Previous participants have included Stephen Fry, Victoria Wood, Jack Whitehall and Sheridan Smith. This latest series begins with Joanna Lumley's Baby, Be Blonde, in which the 19-year-old Jo (Ottilie Mackintosh) is a struggling model who gets a break when she buys a blonde wig. "It didn't, but it made me feel that I had changed the course of my life," says Lumley in the behind-the-scenes film which follows the short. Also starring this week in later episodes are Rebecca Front and Caroline Quentin.