Justin Long: Steve Jobs scrapped some of Apple's "I'm a Mac" commercials because they were too funny

Entertainment Weekly

Only 66 of the 300 ads shot, in which Long plays a Mac and John Hodgeman portays at buttoned-up PC, ultimately aired. Long says that he was told Jobs didn't want the commercials to be too funny because "would detract from the point of the commercial. He thought if people were too focused on the humor in it, they would lose sight of the product.”