Everything George Bush did while in office.
Though I consider Bill Clinton a good president, he did a pretty damn good job of disgracing himself by not only having affairs with women, but having affairs with butt UGLY women.
Disgraces happen all the time in Hollywood, just look at Lindsay Lohan, Tara Reid, Hugh Grant, any number of others.
I, on the other hand, have never disgraced myself, at least not since reaching adulthood. I can't be held responsible for my teenage years. No one can. No, it's not ego, I just have this real serious thing about acting with dignity and honor. Perhaps too much sometimes.