What are your all time favorite 2D platformers?

[pippin]

Sonic the Hedgehog 2(MS)
Sonic the Hedgehog 1-2-3(GEN)
Earthworm Jim(GEN)
Ghouls 'n' Ghosts (MS)
Donkey Kong Country(SNES)
Super Mario Land 2(GB)
Shinobi 3(GEN)
Aladdin(GEN)
The Lion King(GEN)

and many more...