Card Games
Just Solitaire - http://justsolitaire.com/
A free game site where you can play full-featured versions of your favorite solitaire games.
Solitaire Central - http://www.solitairecentral.com/
The web's oldest and most comprehensive solitaire information site, with thousands of solitaire rules, hundreds of the best solitaire downloads, and a huge directory of online solitaire games.