What are some sick 16-bit Co-op games?

[Alasted]

Avalach21 said:

Alasted said:
Toejam & Earl and Bonanza Bros. on the Genesis.

 Toejam and Earl, or Toejam and Earl Panic on Funkatron?

Ah, how could I forget Panic on Funkotron?  Shame on me!

They're both fun as hell, but my brother and I still log hours upon hours of play time on the original Toejam & Earl.  The original is a bit slower paced than Panic on Funkotron, but it works.