I'm guessing you've seen the new Six Flags commercials with the old, bald guy on it. Turns out his name is Mr. Six, according to the official website. But have you seen the very first one? I saw it when I taped Century City one time and thought it was the funniest thing I'd seen in a long time. Turns out it's on the Six Flags website, along with all the others.
In a side note, I don't know why more companies don't put their commercials on their websites. They should be grateful someone actually wants to see them, instead of just putting up with them. In that sense, Burger King's Subservient Chicken website is a step in the right direction. Who needs television ads when people download them themselves?