ACK! I haven't found the movie but an obscure wikepedia reference led me to find a song that borrowed it for its verse.

I can clearly hear where he 'borrowed' the melody for his main verse but It's not a song I was familiar with thankfully, so my hunt is not over.

If you like Rachmaninoff, I suggest you NEVER listen to this song. Otherwise this movement will be forever tainted for you by this gawdawful pop tune. Never Gonna Fall In Love Again by the ball of hair that is Eric Carman.

With great power comes Awesome irresponsibility.