A few years ago I chanced upon something truly surreal. I was driving along a track in New Zealand. The way you do. There was a field on the left. In it there was a man sitting on a portable chair, a sketchpad in his lap, a pencil in his hand. Gathered in front of him, like a cluster of attentive disciples, was a tight semi-circle of cows. The man was wearing a black suit in a style popular at the end of the 19th century. The surreal bit is that, despite the grizzly beard, this was Columbo. None other than.

It’s an accepted flouting of reality that in films “based on a true story”, the first betrayal of the truth is in the casting. The reveal over the closing credits of The Fighter tells you just how well its two main characters have done out of Hollywood. For the preceding two hours these rough-edged veterans of the boxing ring have morphed into Mark Wahlberg and Christian Bale.

The Cardiff Singer of the World may or may not be (as several of this year’s competitors seemed to think) the most important voice competition in the universe, but it must surely be the nicest. The Welsh really do believe, perhaps rightly, that they invented singing; and to hear the whole St David’s Hall uplifted in “Land of My Fathers” at the end of Sunday’s final was a heartwarming experience – almost as much as to see the four losing finalists applauding the winner, the Moldovan soprano Valentina Naforniţă, as if they were honestly pleased she’d won, though at least two of them must have been bitterly disappointed.

Broadway musicals can have a bumpy transatlantic crossing. For every New York entry that repeats its acclaim on the West End, others quickly fade, while still others never make it to the capital at all: consider The Light in the Piazza, which won six Tonys in 2005 but hasn't yet been seen in the UK south of Leicester. What, then, of Shrek, DreamWorks's entry into the Broadway musical sweepstakes that called it quits in New York after little more than a year? It's way too early to tell whether London will prove the show's salvation, but at least it boasts two Nigels who between them are not to be missed.

Broadway may not be “just for gays any more”, as the event's unstoppably charming and funny compere Neil Patrick Harris noted in his song-and-dance opening to the 2011 Tony Awards, held last night in New York to honour that city's theatre season just gone. But it’s still very much about the Brits: some habits never die.

A tall and exceptionally striking Valkyrie of a blonde, Alison Balsom (b 1978) is the polar antithesis of a hard-drinking, slightly tubby, very male trumpeter from central casting. For the photoshoots which fetch up on her CD sleeves, and public performances such as Last Night of the Proms in 2009 and this month’s Classic Brits, she pours herself elegantly into a series of dresses in the style of a hot young violinist kidnapped by the marketing department. But there is of course a great deal more to Balsom.

Last week Villager-in-Chief Conor J O’Brien was awarded an Ivor Novello award (Best Song Musically and Lyrically, in case you’re curious) for the title track of his Mercury Prize-nominated debut album Becoming a Jackal. Several questions arise from this fact (one of them being: do they have an award for Best Song Musically but not Lyrically?), but the most pressing is this: just how many more gongs will O'Brien win before the decade is out?

Crikey, no gongs whatsoever for ITV1's Downton Abbey, but you can't grumble about Sherlock lifting the Best Drama Series award at last night's Baftas. Steven Moffat and Mark Gatiss's ingenious update of Conan Doyle for BBC One was one of 2010's telly highlights, and you might have thought it would have earned the Leading Actor award for Benedict Cumberbatch.

Surely, any film called Win Win and starring Paul Giamatti is being deeply ironic? After all, you don't expect the hangdog star of Sideways and Barney's Version to do the feel-good Hollywood thing, and it seems of a piece with Giamatti's baleful, ever-defeated demeanour that a scene of him jogging along should end with the actor coming to a panting halt.

The career of Natalie Portman has always had more light than shade. Even her lapdancing sylph in Closer erred towards the porcelain. Casting her in Black Swan was a calculated risk by Darren Aronofsky.