Ashton Kutcher
That 70s Show star and philanthropist Ashton Kutcher has made an excellent example out of his career. He's not one for flaunting the luxuries of celeb life and dedicates a lot of his time to helping children in need. Still, Kathy Griffin had a bit of a problem with him when they were working on a project together. According to the comedian, she and Ashton were hosting an event, but Kutcher wasn't keen on listening to her. He jumped at the chance to snub Griffin, even interrupting an important conversation between her and P. Diddy!
Neil deGrasse Tyson
Neil deGrasse Tyson built up a dedicated fanbase across the globe and managed to get kids interested in science and space. Although Tyson is grateful for his fans, a club appearance for the astrophysicist costs upwards of $85,000, and that's only for a few hours. Many of the venues have agreed to pay his fee so he can talk about time and space for a little while, but a lot of fans see that as selling out.