As I'm sure many people know Shilo (Omicron/ChocoBricks Customs) has two loves - minifig customization and video games. His most recent creations are the perfect blend of those two interests. He's posted two 'series' of Video Game Collectible Minifigs. Series 1 (pictured above) has Mario, Link, Master Chief, Simon Belmont, Duke Nukem, Gordon Freeman, and MegaMan. Series 2 is just as great (you really have to see his Scorpion from Mortal Kombat).
These figs have evolved over time, and I must say the focus on continuous improvement has paid off.
See these and many more video game inspired heroes, on Shilo's Flickr stream.