Didn't take me long to decide it was going to be something from School Of Rock. The problem was what track to choose? Decided to choose one written for the movie that they use in the competition at the end:
Just excellent. Jack Black doing what he does best (i.e. not being Gulliver) and (I believe) the children in the movie were really playing the instruments.
Other favourite sections from the movie include the children getting CDs to listen to for homework (the drummer, of course, gets Rush - 2112 to listen to) and the rock family tree on the blackboard with Jack's cool board pointer. I like the way there are various boxes with musical genres (Punk, Heavy Metal, etc.) on the board. Beside the boxes, bands' names are written. Down near the bottom, there's one branching out of Prog with a question mark in the box and beside it is written Zappa, Can and Captain Beefheart. :-)