Most of my time online is spent reading news sites and online journals. However, I have been known to visit these places from time to time, and I have found them to be a lot of fun.
I highly recommend the Scrabble and Sorry games. The Monopoly game moves a bit fast for me. You'll find that the arcade games are just like theones you remember. I spent some time blowing up Asteroids just like the old days!
There a lot of great games on this site. Pacman is really Pacman! There's a nice pool game as well. Give it a try -- they are all fast and free.