Limelight
Limelight by Rush sure has some strange time signatures. I don't think I've ever been good at understanding the bottom number of a time signature, but I can count how many beats seem to be in each measure. Without counting how many measures there are of each time signature, I hear the time signature start at 4, then go to 7, then 6, then 4, then 7, then 6, then 4, then 7, then 3. After that, I can't keep track.
Pretty wacky. I like it!