I've never seen The Commitments, I've always wanted to. I have soundtrack and it's great. But for me, the question is easy. It's High Fidelity.
I love that film as well! Although I preferred the book! That film was my favorite movie to feature music for a few years... until
Almost Famous came out... that nudged it out of first place.
I'm hoping Hornby's
Juliet, Naked also gets made into a movie because I thought that as great as
High Fidelity was,
Juliet, Naked was even better as it delved into what it means to be a fan and lover of music even moreso than
High Fidelity did. I could relate to it more... Not because I have the disgusting stalker-ish level of fan worship that one of the characters in that book has, but because being as big a fan of Chicago as I have been, I've come in contact with that kind of fan. The book was real to me because I know fans like one of the ones portrayed in the book exist as I've MET such fans... and fans like that are the type of fans that Robert Lamm was referencing when he mentioned he likes to distance himself from fans.