" From that first job, Philbin bounced around Hollywood, eventually winding up as Bishop's sidekick. On one of the most famous episodes of the show, Philbin announced that he was quitting the show because the ABC network didn't care for him. He then walked off the set during a live broadcast. In his memoir, Philbin reveals that the walk-off was ratings stunt..."
http://m.npr.org/story/142309202?url=/2011/11/15/142309202/regis-philbin-explains-how-he-got-this-way