Bass players unite.
One thing I like is when a band changes time signatures to a signature with a different feel. For instance, 2/4 and 4/4 have the same feel, but 7/4 and 4/4 don't. Different feeling changes are colorful and sometimes staggering. Floyd's "Money" is in 7/4 but the bridge is 4/4. Yes' "Lightning Strikes" is a fast 7/4, and when they switch to 4/4 in the middle, it is dynamite. The Letter E's "Alushta" is 7/4, then 12/8or4, then 7, then 12, then 7 again. Journey's "Nickel and Dime" has two sections, one in 5/4 and one in 10/8or4.
Lenron, I'm sure you're familiar with the KC and Yes picks there, but maybe not the other two. For fun in time signatures, try those.
Hmmm... fun non-4/4 or 3/4 songs should be a thread. I start with American Football's "Never Meant" in 12/8.