By Denise Martin, Special to The Times Remember that line from the beginning of Singing in the Rain, where Gene Kellys character is being interviewed about his personal motto, and he replies, Dignity. Always dignity? And then it shows him playing pianos in noisy bars and getting hit in the face with pies on stage? Well, his character still went on to be a big movie star, right? So who says it cant work out for some of Hollywoods wannabes, those brave souls who have subjected themselves to all kinds of crazy in the hopes of becoming the next Flavor Flav, who alone revived VH1 by striking up an unlikely romance with Brigitte Nielsen on The Surreal Life. Theres no shortage of opportunity for the willing. This summer, NBC has revived "I'm a Celebrity, Get Me out of Here!" Only one episode in, and Heidi Montag and Spencer Pratt were dominating headlines on TV and gossip sites. Heres a look at some of the more humiliating shows that the would-be famous have subjected themselves to in the name of some prime-time time.