Contrary to what some here might say, RB is a HUGE need for this offseason.
We're ranked 30th running, need I say more, and A.Foster had one good game this season. It's a foregone conclusion C.Brown is gone this season, so ideally we could use a couple RB to provide depth next season. IIRC, Dennison utilized 5 RB's this past season in Denver.
A couple guys I like are:
Joe McKnight USC 6-0 200
Breaks tackles well, has good vision, blazing speed, tough to bring down
http://http://www.youtube.com/watch?v=HPLZagWioUU
Charles Scott LSU 6-0 235
A TOTAL BEAST, north-south type runner, great one cut RB for our scheme
http://www.youtube.com/watch?v=ROrIY31e7yE
Imagine what this team could have done this year with a good running game....