Pictionary

BoardGameGeek - Pictionary - Features reader-submitted reviews and discussion. Also presents images and session reports.
www.boardgamegeek.com/game/2281

Haunted Bay - Halloween Pictionary - A variant specifically aimed at Halloween play. Includes how to play and suggested word lists.
www.hauntedbay.com/entertaining/party/halloweenpictionary.shtml

Wikipedia - Pictionary - Encyclopedia style article describing how the game is played.
en.wikipedia.org/wiki/Pictionary