Below are the videos of some of my favorite arcade games. All of them are created using MAME, none of them are tool-assisted, as you can probably tell because I suck at some of those games.
Street Fighter 2 CE:
Double Dragon:
Final Fight:
Captain Commando:
Cadillacs and Dinosaurs:
Golden Axe:
Alien vs. Predator:
The Punisher:
Spider-Man: The Video Game:
Operation Wolf: