Any list of 2010's most visible celebrities has to include Katy Perry. Whether you were a fan or detractor, whether you dig her music or are just mesmerized by her omnipresent cleavage, it was hard not to notice her. You may think that it's impossible to bring scandal to Sesame Street, but how well do you know 2010: The Year in Katy Perry?

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The difficulty level of How Well Do You Know: 2010: The Year in Katy Perry is rated:

	1	If you don't get at least half right, feel free to punch yourself in the face for us.
	2	Relax and act natural, you should do fine.
	3	Fanboy/fangirl obsession over the source material doesn't hurt here.
	4	Dude. Seriously. Dude.

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• Celebrity trivia (78 active quizzes)
• Year in Review trivia (114 active quizzes)

• 2010: Celebrities In Memoriam
• 2010: The Year in Conan O'Brien
• 2010: The Year in Movies, Part I
• 2010: The Year in Movies, Part II
• 2010: The Year in Movies, Part III
• 2010: The Year in Movies, Part IV
• 2010: The Year in Pop Culture
• Katy Perry: Part of Me

• Daron Aldridge
• Tony Kollath

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