Bartman, I haven't noticed a problem like that with any games, so I wouldn't worry about that.
Wooly, I'm not sure I would say Fusion looks better than Super Metroid, but they're definitely comparable. Good games to pick up are Wario Ware, the Sonic games, the Mario Advance games, RPGs, Doom II, Kirby: Nightmare in Dreamland, etc. So yeah, the only game I've seen that seems to suffer on the GBP is Pokemon R/S with it's blurry text , but it's still plays fine.