Bear with us here, non-theatre nerds, because despite the fact that both Tim Curry and Terrence Mann have a musical theatre background, it doesn't mean you haven't seen them in anything. Separate things, even -- despite the fact that their hair makes their younger selves look like the same person.

First up, Tim Curry, who's best known for his role as Dr. Frank-N-Furter in the cult-classic film 'The Rocky Horror Picture Show.' You may also know him as the Wadsworth the butler in 'Clue,' Pennywise the clown from Stephen King's 'It' and the concierge in 'Home Alone 2.'

In addition, he voiced the evil smoke-guzzling Hexxus in 'FernGully' and originated the role of King Arthur in 'Monty Python's Spamalot.' Basically, he's done everything.

Terrence Mann is more of a Broadway kind of guy, originating the roles of Javert in 'Les Miserables' and Rum Tum Tugger in 'Cats,' but most people probably know him as the guy who starred in all four 'Critters' films. Yes, all four. Most recently, he played Bob the skull on the short-lived 'The Dresden Files' and an erstwhile marine biologist on '30 Rock.'

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