What not to say: Johnny Depp’s in 21 Jump Street! Johnny Depp’s in 21 Jump Street! Well, for about five minutes, anyway.

Thanks to three hours in the make-up chair and a solitary day of shooting, even the crew didn’t recognise The World’s Most Famous Man until he peeled off his beardy biker disguise and revealed that he too was an undercover cop, returning as an older version of his character in the late ‘80s police procedural on which the movie was based. His sudden appearance is a great moment in Phil “Cloudy With A Chance Of…” Lord and Chris “…Meatballs” Miller’s comedy, but it’s not the best bit – that’s the sight of Channing Tatum jumping headfirst into a cymbal

Did we see it coming? Like Bill Murray in Zombieland, Tom Cruise in Tropic Thunder and Keith Richards In Pirates Of The Caribbean: At World's End, this was a meant to be a very hush-hush cameo, but as is the way with Johnny Depp, pretty much everyone at least speculated that he would turn up at some point.

And in much in the same way that no-one was truly shocked when Hugh Jackman rocked up to drop the f bomb in X-Men: First Class, there was a clear connection between Depp and Jump Street – after all, the original show launched his career back in the day – and the part-time drunken pirate has never been afraid of taking the mick out of himself. For proof, rewatch his sketch on The Fast Show and check out his cameo in the otherwise atrocious Adam Sandler comedy, Jack And Jill – he’s the one who’s in Duran Duran and wearing a Justin Bieber T-shirt.

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