Always a fun game to play, usually with younger kids.
http://thehouseofcards.com/retail/uno.html

I love me some poker.
http://www.poker.com

This is the only game I win money @ when I go to casinos.
http://www.blackjack.org/

Long but cool game should make the list.
http://www.toptexasholdem.com/

I played this a lot in junior high school. Hilarious game of quickness.
http://www.pagat.com/patience/spit.html

Used to play this with my grammah. Quality game, she would always win.
http://www.pagat.com/rummy/ginrummy.html