Rick Moranis, 'Ghostbusters'

The Nerd King of movie accountants is the Brylcreemed, high-water track suit-wearing Louis Tully (Moranis). Tully throws a party for his fourth anniversary as an accountant and proudly tells guests, "I'm giving this whole party as a promotional expense -- that's why I invited clients instead of friends." Later, when he stops being possessed by an ancient demon and wakes up to the sight of marshmallow-covered Ghostbusters, he displays an accountant's singular focus, asking: "Who does your taxes?"
Tax takeaway: Beneath those thick glasses may lie demons.