Dec. 27-Jan. 2: We wrap up the years with a quick look back at the movies, music and more, and say farewell to the '80s, at least until Y2K magically resets our pop-culture time machine to Jan. 1, 1900. All that and more this week on Thirty Twenty Ten, your weekly look back on the week that was 30, 20, and 10 years ago. Happy new year(s)! Get ready for season 5: 1990, 2000, and 2010!