Seasons 3 and especially 5 are cooler, but 1 is worth watching. I'd stay away from 2 and 4.
Season 2 is quite enjoyable though.
and season 4 is great.
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Brawl is like ZSS' breasts. Well rounded for casual players
http://img.imgcake.com/YetAnotherShadow/Gameboyfeverjpegez.jpg