These are probably the best zombie flash games on the web... which I would know because I have a thing for shooting zombies. As a matter of fact, the guys over at Armor Games might have the best selection of great flash games out there, check out some others while you're there (I'd also recommend the simple game Tactical Assassin and the quite complex turn-based RPG Sonny).
Yahoo's Text Twist really occupied most of my time when I took a keyboarding class back in highschool. It's really easy to learn and definitely one of the most addictive things I've played... it's been four years since I started.
Don't tell my kitty, but I love this game. Probably the easiest on the list, its simplicity is a thing of beauty. Violence and kittens are always a good match, especially with you in control. We have an ongoing leader board here at work... the record stands just shy of a mile. Good luck beating that.
This game will drive you nuts. My pursuit for the perfect design has resulted in high-stress situations and extreme frustration. Check out the video below for some stupidly amazing Line Rider creations.
That pretty much does it for my "usuals". I go for the occasional online crossword or sudoku sometimes... but these games are just so much more fun.
Have fun, kiddies.
