I really enjoy playing the Wii. The most rewarding multi player game is Wii Sports right now(comes with the console). The best of the five sports are Bowling and Tennis. Tennis is a little more action packed and interactive so I was playing it last night. I took my score from 1100 something (Pro rated after 1000) and in a little over an hour got it as high as 2082. I am now playing the same team over and over again as it's the best one the computer has (1900 and 2000 rated). I play best 3 out of 5. In a game you score 15, 30, 40, win. If there is a tie at 40(deuce) you play until someone scores 2 points in a row for the win. I know nothing about real tennis and can only assume that's how it's played.

At this point you pretty much have to have a perfect game to go up in your rating. While at 2082 I played a set of 5 and won and still went down 22 points in my rating for having not crushed the other team.

I'm a dork so here is a video of me breaking 2000.