Maybe Britney could get some comeback lessons from Robert Downey Jr. The actor, who blazed back onto the A-list with Iron Man, has not only been tapped for two sequels of the hit superhero flick, but will reprise his role in the upcoming all-star heroes film The Avengers, according to Variety magazine. Director Jon Favreau will also be back for the sequels and is serving as producer on The Avengers. Iron Man 2 is scheduled for a May 7, 2010 release and The Avengers is tentatively scheduled to come out on July 15, 2011. Currently, Robert is filming Sherlock Holmes in London.