2010 NFL Combine: What Should Teams Be Looking For?

The answer should be "football players", but it doesn't always work that way...

The fact is that the NFL draft is a crap shoot at best.  You can take a guy that is a "can't miss" only to watch him fail miserably.  The guy in this picture can attest to that.

You can take a chance on a guy in the sixth or seventh round and find a diamond.  Tom Brady,Terrell Davis, and Deacon Jones proved that.

Knowing this, what should scouts be looking for when evaluating a player in Indianapolis this week?  Should they look for the guy that runs a sub 4.30 second 40 yard dash?