Easily the greatest fighting game on Wii, or any other console.
The Good: There is just so much to do. You can duke it out with your friends and family in the group mode, or do a number of 1-2 player activities in the solo mode such as, classic mode, all-star mode, home-run contest, and much much more. Another neat addition is the story mode named The Subspace Emissary. This could have been a whole other game and is easily the best part of the game.
There are also different options where you can watch movies, listen to music and check all your records. One last awesome thing is how many characters there are. Thanks to the addition of Pit we now have a new Kid Icarus coming out to stores.
The Bad: The only real problem I can find with brawl is that some of the characters are a bit unbalanced. A character like Olimar would stand no chance against Solid Snake.
All things said Super Smash Bros Brawl is without a doubt worth the 50 bucks it costs.