Amanda from the Joe Schmoe 2 Show (Spike TV) is an A Chi O from the University of Michigan. (If you were watching the finale, her friend Steph came on the show. Steph is a ZTA from Penn State).
I also started
this thread in the ADPi forum about a girl from my chapter who was on the WB's High School Reunion. There's another guy on the show who is a UCF Pike.
ETA: I think most of the reality tv people like to let it go once the show ends... Then you have the guy who won on the first season of The Apprentice, who sends out press releases about himself for any old thing.