Espn is starting their draft coverage of the NFL draft with senior bowl practices (Subscription Required)
Here's a list of players that according to Mel Kiper have been doing well in the practices so far.
Texas OT Justin Blalock (good run blocking but can't pass protect as a tackle and should move to guard)
LSU WR Dwayne Bowe (great size and strength to muscle into position)
Florida State ILB Buster Davis (good recognition skills but undersized)
Miami DT Kareem Brown (shows a strong rip move)
Alabama FB Le'Ron McClain (dominant during pass protection drills)
West Virginia OC Dan Mozes (impressive)
Fresno State WR Paul Williams (looks very, very good)
Cal DL Brandon Mebane (good power rush)
Penn State OL Levi Brown (good feet)
LSU WR Dwayne Bowe (most polished)
Auburn OG Ben Grubbs (stud)
USC OC Ryan Kalil (strong anchor)
This is by far not an exhaustive list. I just wanted to post a few of them so those without Insider subscription would know what to look for in the Senior Bowl.