what are some of your favorite flash games?

What are some of your favorite flash games that can be used for the arcade (points or some kind of scoring system)? What were some of your favorite games that were on the old arcade?

That spiffy Towers of Hanoi game... the only one I actually beat Sephiroth on and stayed on top until the site went down!

There is also this little Tower Defense game - http://game.duelsdefense.com/index.html# (I'm not sure if there is a scoring system implemented, I know the owners of it and will ask if they plan to create one for it if needed)

Duels defense is a pretty fun game. Not sure if this is the same towers game that was on the old arcade but it is still towers of hanoi:
http://afterlife.ws/forum/index.php?action=arcade;sa=play;game=116

That is the one! 32 seconds, Seph... Get ready