10:54 PM EDT 12/16/2014

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Revisit the Stars Who Played Themselves on How I Met Your Mother | How I Met Your Mother, Alan Thicke, Cobie Smulders, Neil Patrick Harris, Nicole Scherzinger, Tim Gunn

Revisit the Stars Who Played Themselves on How I Met Your Mother

Originally posted 03/31/2014 10:00AM

Over nine seasons, How I Met Your Mother has acquired an impressive list of celebrity guest appearances.

There was Britney Spears as the dippy dermatologist's assistant obsessed with Ted (Josh Radnor). There was Bryan Cranston as the architect whose buildings always seemed to resemble – how shall we put this delicately? – male anatomy. Even Jane Seymour ditched Dr. Quinn's period attire for the sexy style of Marshall's (Jason Segel) cougar law school professor whom Barney (Neil Patrick Harris) just couldn't tame.

But there's a much smaller circle of stars who've managed to do something even more unique: play themselves. Some became part of long-running gags, others only filmed one-off appearances – but all were legen–wait for it–dary.

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