Done two more.
Mew from Pokemon Silver. I love its Silver sprite. It is so awesomel it's probably one of my favourite Mew sprites.
Voltorb from Pokemon Gold/Crystal. I was originally going to submit it to the Red/Blue revamp project thread, due to them essentially having the same sprite (except the Gold/Crystal sprite uses red and the 'shading' is different), but since someone already did Voltorb in that thread, I just updated it and I am going to submit it here.