Want to feel ancient? It's 50 years since Mary Poppins blew into Cherry Tree Lane in the classic Disney movie based on PL Travers' novel.

Its star Dame Julie Andrews will be Graham's very special guest on tonight's show.

And, if you doubt the film's enormous cultural significance for one second, let me point out that the spellcheck on my computer just recognised the word supercalifragilisticexpialidocious.

Actress Dame Julie also shares a Despicable Me connection with Graham's musical guest Pharrell Williams, who'll be performing his new single Marilyn Monroe.

For the benefit of younger viewers who've never found themselves humming Chim, Chim Cher-ee in an idle moment, Channing Tatum and Jonah Hill will be on the show, too, to chat about their new movie.

The sequel to 21 Jump Street sees them going undercover as high school students once again.

Yes, it's called 22 Jump Street...

Radio Times review

Amazingly, it's 50 years since Mary Poppins wafted in to number 17 Cherry Tree Lane for the Disney version of PL Travers's novel. So, although guest Julie Andrews isn't likely to arrive clutching a carpet bag and a parrot-headed brolly, she'll probably chat a little about one of her best-loved film roles.

Perching next to her on the Norton sofa are Channing Tatum and Jonah Hill, stars of action comedy film 22 Jump Street. And, no doubt making everybody "Happy" and wearing an oversized hat, is Pharrell Williams who performs Marilyn Monroe.

There's a tour de force of furious farce from Count Arthur Strong (aka comedian Steve Delaney) tonight when he "entertains" his friends with a ramshackle, thoroughly unhinged version of Windmills of Your Mind. It's as gloriously terrible as you'd expect, yet even this cannot prepare you for the demented montage of songs from popular musicals that follows. The Count as the Phantom of the Opera, with a piece of bacon on his cheek? As Julie Andrews in The Sound of Music? The hopeless ex-music-hall "star" decides to do what he does best (ahem) when the gang are trapped in the café while riots rage outside. It's a cavalcade of deep silliness and I'm still laughing.