We've seen plenty of tribute games before, but a new Pokemon-meets-Street Fighter hybrid looks more impressive than most fan-made titles. Based on what appears to be a Street Fighter-like engine, this brawler looks to feature smooth attacks, between-match animations, and a noticeable level of polish.
FM2K is Fighter Maker (a fighting game version of RPG Maker) which was terrible. Though sometimes I still pop it in to remind myself of its terribleness.