Project Melee is legit. Find out more information at smashmods.com, it's a community effort to make Brawl into Melee 2.0, and it's doing a GREAT job so far! Enjoy the videos, in the first few I'll be playing against people who don't have a lot of experience with it yet!
Project M closed alpha. Everything is subject to change. projectm.smashmods.com