Since practically everyone is familiar with movies, plays, and TV, I always liken RPing to acting. Here's my quick blurb:
"Basically, Roleplaying is acting, or a grown-up version of the "Let's Pretend" that we all played as a child. Just as an actor or actress plays a role in a film or play, RPers are portraying a character, which leads us to the next question...
Ever seen some "B" Horror flick where, on a dark and stormy night, when the lights suddenly go out, the protagonist says "I'll go check the fuse box in the basement."? Oh come on, now! We all know that the monster is down there, and that the protagonist's life expectancy is about six seconds!
Ever laughed at the poor sap, and thought how, "If I were him, I'd go get the shotgun and flashlight from the den, first, and when that critter jumped out, I'd blow his fool head off!" Ever watched a movie where Arnold missed an obvious clue, and thought how you could shorten the manhunt by 48 minutes? Ever wanted to meet a Dragon, be an Elf, sail across a sea of stars, or visit a world where the impossible is a daily occurrence?
So have we; that's why we're here. Just choose the appropriate role..."