If you are looking for great robot teams, maybe look at FRCTop25? That might be a good place to start..
As far as great RCA teams, there was a CD thread with a spreadsheet on teams who have won it multiple times (
http://www.chiefdelphi.com/forums/sh...3&postcount=42) Perhaps look at people (insert number)-peated. For example, I am think FRC1311 has won RCA at peachtree the for past 3 years.