By Denny Dyroff, Entertainment Editor, The Times Julia Othmer Today, April 20, is a holiday of sorts. It is 420. 420 used to be an underground holiday. However, with the ever-expanding list of states that have legalized recreational marijuana, 420 is not so underground anymore. 420, 4:20 or 4/20 (pronounced four-twenty) is cannabis culture slang for marijuana and hashish consumption, especially smoking around...