NEIL PATRICK HARRIS, Harold & Kumar Go to White Castle (2004)

Midway through Harold & Kumar Go to White Castle, Neil Patrick Harris shows up as...himself. Doogie Howser is all grown up and damn if he doesn't shock the heck of out us with the foul stuff coming from his mouth. ''Ya, I've been craving burgers too — fur burgers.'' Between stealing a car and partying with his scantily clad stripper friends, the antics never let up. Harold and Kumar who? — Connie Yu