Sean will go all in!

Sean is expected to be one of the participants in the 4th annual All In For CP No-Limit Texas Hold'em Poker Tournament on December 9 at The Venetian Poker Room in Las Vegas.

The event will benefit the One Step Closer Foundation—a non-profit organization seeking to ease the lives of those suffering from cerebral palsy.

Source and more info, including video interview with Sean from last year's event. 

Sean Astin and "Dish Dogs" costar Shannon Elizabeth at 3rd Annual All in for CP Tournament in 2010