The premise is simple: I'll tell you what players you can confidently start the season with, and what players should cause your stomach to wobble if you have to start them.
2006 stats at NFL.com and pro-football-reference.com
Kellen Winslow, Jr. (TE): In 2006 he was a decent fantasy tight end, but with very good yardage production and poor touchdown production. IF Winslow can bring his touchdown production up, he can compete to be the second best fantasy tight end in the league.
Jamal Lewis (RB): your first instinct might be to dismiss him, and while his yards per carry have slipped in recent years, he still produced 1,100+ yards and 9 TDs last season. You also can expect him to get a lot of carries in Cleveland. If you are strong at other positions, Lewis can be a solid #2 RB.
I would not be happy to start Braylon Edwards: Cleveland's QB situation is too shaky. I don't think a shaky QB will affect a good tight end like Winslow much, but it will affect a good WR like Edwards. But Edwards is a good player worth a roster spot: you should just hope he's not one of your two best WRs. The Cleveland offense was just too lousy in 2006, and while some new players should make it better in 2007, it's still bad enough to scare me off a player like Edwards.