Sifting around www.newgrounds.com flash portal, I came across Super Mario Crossover made by explodingRabbit. This has got to be one the most awesome things I've come across on the net lately. It lets you play the first Super Mario Bros. game with Samus, Link, Mega Man, Simon Belmont and Bill from Contra. Massively fun and nostalgic. :)

Um....I think this has already been covered....