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David Lee Roth

has done it all: Been the frontman for Van Halen, been busted for a dime bag at Washington Square Park, and now, he's training to be a city paramedic. Roth told the Post, "I have been on over 200 individual rides now. Not once has anyone recognized me, which is perfect for me." He asked the Post not to disclose his locations, because he's trying not to be the attention whore he's been in years past - he's so dedicated to helping people, he's cut his hair. His teacher says he's one of the best students she's had, and Roth adds, "I am a member of a team again, and that's what a rock band always was." Aw. So, if you're having a heart attack, the vaguely familiar white dude defibrillating you might be Diamond Dave.

Other celebrities who sometimes do everyday kinds of jobs: Steve Buscemi helps out with firefighters and Amy Sedaris waits tables at Mary's Fish Camp.