Mario!

[Sudoku Kitten]

Any game:
Super Smash bros.
Dr. Mario
The original Mario series
etc.

Yursh, a bit old school, but still the shizzle fo' rizzle & if you don't think so I'll punch you in the jizzle rofl  

[Thundah_Phish_Tacos]

My favorite is the Super Mario RPG  

[fralazeneX99]

Mario rocks.

Has anyone played the new wii game? It's awesome!

Super Mario Galaxy was the first one I beat (because I suck at Mario.) I didn't get all the stars, unfortunately. I'm currently playing my sister's copy of Yoshi's Island.

Personally, Yoshi is my favorite character. Anyone else want to share?