by Mike Krumboltz On Thursday afternoon, the body of actor Andrew Koenig was discovered in a Vancouver park. Though best known for his work on '80s sitcom " Growing Pains ," Mr. Koenig also starred as the Joker in an unofficial Batman film from 2003 entitled " Batman: Dead End ." The film, which is available on YouTube, has exploded in the Search box. Over the past 24 hours, web lookups on " andrew koenig batman " and " andrew koenig batman dead end " both jumped,