By William Gallagher BBC News Online

The characters in A Mighty Wind will grow on you

It focuses on the American folk music scene and is like a gentler This Is Spinal Tape - and it comes from Tap's Christopher Guest.

It's not as good as Spinal Tap but it's better than Guest's Best in Show - and there are only one or two great jokes.

Yet when you watch the many, many extras you realise you've become terribly fond of all the characters.

You'll even enjoy the affectionate but awful music. The film's storyline builds to a televised concert and the extras include the full thing in all its cheesy glory.

Then there's a commentary, 15 deleted scenes, and short pop videos. A Mighty Wind is currently only available in the UK at HMV.

Sherlock Holmes Collection

BBC and ITV have announced new Holmes productions, and Radio 4 has never stopped making them, but in the 1960s Peter Cushing wore the deerstalker.

And Nigel Stock was an earnest Watson in a series of BBC dramatisations that now come to DVD in one set or three double bills.

Cushing is broodingly theatrical in the role and it's firmly from the age of studio drama that now seems cheap.

But also absorbing. The stories are told deftly and the DVDs are bargains, albeit one without any extras.

Quantum Leap

You have to import this from America - and many readers have emailed to say they already have - but once you do, it's impossible to stop watching.

Quantum Leap becomes compulsive viewing

Sam Beckett (a charming Scott Bakula) flaps about in time, "leaping" into the bodies of people "to put right what once went wrong".

It sounds bad and there are moments that reek of the 1980s but once it gets going, it's a joy.

Each episode ends with an irresistible tease for the next one; you'll end up watching the lot in one go.