Anyone that's a true hip-hop head knows that one of the best tracks on any LP is the posse cut. It's where a bunch of cats get in the booth and spit 8-16 bars or more of the hottest, hungriest lines that they can muster, and it brings out the best of even the weakest of MC's, not to mention lyrical juggernauts- even established acts spit lines in posse cuts like they're Unsigned Hype in Source magazine looking for a contract.
Now I put the tags in because I know those three will get mentioned a lot, but here's one to start that I think no one will think of....