Two that come to mind right away for me. Kongo and Spencer Fisher. I bought into both of them early and both haven't been anything near what I thought they would be by now. Anyone else?
I'm still a big fan of Fisher. He would give any 155 pounder a tough night. Fisher would be in my top 10 at that weight. For me, Kurt Pellerino has disappointed. He trains here locally and has a reputation as a gym badass. He's very solid, but I though he had the physical tools to beat Diaz and Stevenson but didn't have the mental strength to pull either fight out.
I like Fisher, but it's tough to put him in the top 10 at 155. Top 20, maybe, but not top 10. And Cro-Cop should be back in the UFC as early as this summer. There's rumors of him fighting Couture at UFC 99 in Germany. TFK
He came really close, though. to me he will always be remembered as the guy to whom Joe Rogan said "If I had a bugger as big as that coming out of my nose I'd want somebody to tell me".