Robert Downey Jr. is, without argument, one of the finest actors working today in Hollywood. He may have fallen completely from grace for a period with on-again, off-again substance abuse issues, but his resurgence, beginning in 2005, has made him a household name. He’s not only a stellar actor, but also a surefire bankable box office star. He brings charisma, wittiness, intensity, and his trademark cheery sarcasm – delivered with absolute pinpoint precision – to every character he portrays and, …