VIDEO: Jake Gyllenhaal Plays Water Wars; Talks Broadway's CONSTELLATIONS on 'Tonight'

On last night's TONIGHT SHOW, Jimmy and guest Jake Gyllenhaal faced off against each other in the card game war where the loser faces wet consequences. Later, the actor talks about his upcoming Broadway play Constellations and getting nervous when his sister, Maggie, comes to watch. And the actor discusses his new film 'Nightcrawler.'

Check out clips from the appearance below!

This winter, Manhattan Theatre Club and theRoyal Court Theatre, by special arrangement with Ambassador Theatre Group and the Dodgers, will produce Constellations in a strictly limited 13-week engagement. Previews begin Tuesday, December 16, 2014 for a Tuesday, January 13, 2015 opening night at MTC's Samuel J. Friedman Theatre (261 West 47th Street).

Oscar nominee Jake Gyllenhaal (Brokeback Mountain, Proof) makes his MTC and Broadway debuts in the first American production of Constellations, a new play by Nick Payne (If There Is I Haven't Found It Yet), which premiered at London's Royal Court Theatre to tremendous acclaim. Michael Longhurst (If There Is...) directs.

This mind-bending, romantic journey begins with a simple encounter between a man and a woman. But what happens next defies the boundaries of the world we think we know - delving into the infinite possibilities of their relationship and raising questions about the difference between choice and destiny.

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.

Photo: Douglas Gorenstein/NBC