Host Rob Dyrdek counts down his Top 10 categories of the series. Appearing: Johnny Knoxville; Floyd Mayweather Jr.; Justin Bieber; Quinton "Rampage" Jackson; Sara Jean Underwood.
Justin Bieber is a guest in the Season 2 opener.
Marge hires Slava's attractive daughter as Bart's piano teacher, while Homer flips when he loses the last two hairs on his head, and must resort to a variety of headgear to keep the secret from Marge.
Justin Bieber stops by the factory and Rob's best friend, Christopher "Big Black" Boykin ("Rob and Big") returns in the Season 4 opener. Also: Rob gets chased by a 400-lb. tiger.
Justin Bieber and Deion Sanders go head-to-head.
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