When I'm bored at work, I love to play games on the Internet. I can't install anything on my computer, so that rules out software games like The Sims, but I can play online games that use Java and stuff like that. Anyone know any good games I could try? If so, please share!

My favorites are:

Text Twist and Bookworm on http://games.yahoo.com/
Crypt Raider/Acno's Energizer and Tetris on http://www.miniclip.com/
Insaniquarium and Typer Shark (sounds like I'm working!) on http://www.popcap.com/

What do you like to play?