You've just crossed the rain-slick bridge at the center of Underpass, a Call of Duty: Modern Warfare 2 multiplayer map. You desperately search for cover as a B-2 stealth bomber drops destruction nearby. Sprinting into a building, you scan the room that you've just entered. No sign of the enemy exists, but a friendly soldier stands in a corner. Over your microphone, you ask him to watch your back. Suddenly, you hear a loud and excited voice. Could it be...Mrs. Doubtfire?

Maybe so! Robin Williams is a well-known gamer, parading his first-person shooter skills at conventions and talk shows. But he took his dedication to games to a new level, regaling the audience with tales of Modern Warfare 2 mishaps during Monday night's Late Night with Jimmy Fallon. Apparently, we aren't the only ones amused by the antics of 10-year-olds on Xbox Live. Celebrities find them funny, too!

So next time you hop into a game of Modern Warfare 2, just remember -- you never know who you might be playing with!