The belief that celebrity deaths only come in threes is seriously being tested this week. Famous commercial pitchman Billy Mays died this morning at the age of 50. Mays was the boisterous spokesperson for the cleaning products OxiClean and Orangle Glo and was easily recognizable thanks to his larger-than-life personality and ever-present beard. He was found by his wife in their Tampa home, and TMZ (the Web site that broke the Michael Jackson story) reports Mays struck his head during a rough plane landing the day before. The night before his death, Mays even Twittered: "Just had a close call landing in Tampa. The tires blew out upon landing. Stuck in the plane on the runway. You can always count on US Air."