Cyclist Tyler Hamilton is a key witness in the case accusing Lance Armstrong and others on his team of using performance-enhancing drugs. He went on '60 Minutes' (Sun., 8PM ET on CBS) and repeated some of the same statements he made in front of the federal grand jury.

"There was EPO. There was testosterone. And I did see a transfusion," Hamilton said, before clarifying it as "A blood transfusion." Transfusing, or blood doping, was used more before the performance-enhancing drug EPO came into vogue.

When asked how Armstrong could get away with being "a cheat and a liar," Hamilton replied simply: "There's a lot of other cheats and liars out there, too, who've gotten away with it. It's not just Lance."