RadarOnline.com's David Viggiano was on hand for Wednesday's big two-hour finale, and he asked dozens of ex-American Idol contestants walking the red carpet for their favorite memory, and best impersonation, of the 50-year-old English music maven who's so bad, he's good.
Watch the video on RadarOnline.com
Idol's season 6 runner-up, Blake Lewis, said he got along with Cowell because they shared the same rebellious attitudes, while Ace Young recalled, "He didn't like my outfit -- so much so that he didn't hear me sing."
Pop culture punchline William Hung (She Bangs!) said that Cowell's harshest comments are what most will remember him for.
Other former contestants, including Alex Lambert, Michael Johns and Antonella Barba, then launched into some great impressions of Cowell -- we'll let you be the judge who did it best.