Space Invaders Extreme 1-2
Death Label but importing will be a bitch
Big Bang something not sure
Space Invaders Revolution
Phantom something and Asteroid something not going over the rest it was terrible to me and in my opinion not even worth trying
Underwater attack but horizontal still good
Geometry Wars sort of
Are you counting contra, metal slug and similar games?
There are some others but
Plenty of great homebrew SHUMPs and emulators to play SNES and NES ones.
Also Death Label and Space Invaders Extreme are some of the best to me
Oh right and there are some collections but I have yet to import or see decent screen shots to Metal Torrent so I won't list it.