First off, Tommy Dreamer- He was big in ECW, now he looks over-weight, not any personality whatsoever, and is a full time jobber for the rest of his career.
Raven- He looks so fat it makes you wonder when's the last time the guy hit up a treadmill. Talk about having a cool, interestingly different gimmick and completely ruining it with twinkies and pizza. You don't look dark and scary if you're a fatboy.
Shane Douglas- He was the head of the franchise in ECW. He had a solid wrestling physique along with an outspoken personality and a fine slutty chick along his side. Now he looks fat, old, and is on his way to being some lowly manager or referee. This guy was a world champ just a fedw years ago.
Tazz- He's doing pretty good for himself outside of the ring, but damn, last night I watched the ECW year in review show, and Tazz looks like a possible Biggest Loser contestant. He literally ate himself out of ring competition, and pretty quickly after signing with the WWF.
Sandman & Balls Mahoney- Both still have a job in the ring, but we've seen enough of these two guys to know that they are both tiny stepping stones for Kevin Thorne.
These are a few examples of once huge superstars in ECW falling to meaningless non-existence. I blame Eric Bischoff for most of the career distruction that happened to these once important wrestling stars, and well, I'll blame food for some of it. I'm sure there are many more that should be added to the list, but these are a few off the top of my head.