VIDEO: Robert Downey Jr. Reveals His Acting Weaknesses on TONIGHT SHOW

On last night's TONIGHT SHOW, guest Robert Downey Jr. reveals some of his acting weaknesses before coaching Jimmy through some random emotions he has to fake via green screen as IRON MAN. Later, the actor talks about his new film CAPTAIN AMERICA. Watch all the clips below!

About The Tonight Show: In 2014, "The Tonight Show" returned to its New York origins when "The Tonight Show Starring Jimmy Fallon" made its broadcast debut from Studio 6B in Rockefeller Center. Emmy Award- and Grammy Award-winning comedian Jimmy Fallon brings a high-tempo energy to the storied NBC franchise with his welcoming interview style, love of audience participation, spot-on impersonations and innovative sketches.

An American television institution for almost 60 years, "The Tonight Show" continues to be a home to big-name celebrity guests and a stage for top musical and comedic talent. Taking a cue from his unforgettable predecessors, including hosts Johnny Carson and Jay Leno, Fallon carrys on the tradition that audiences know and love - kicking off every show with the iconic "Tonight Show" monologue. Known for his huge online presence, Fallon will brings along with him many of the popular segments, celebrity sketches and musical parodies that fans have grown to love on "Late Night," including #Hashtags, Thank You Notes and Slow Jam the News.

Critically praised Grammy winners The Roots serves as "The Tonight Show" house band.

Photo by: Andrew Lipovsky/NBC

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