who plays dr van der woodsen in gossip girl
William Baldwin William Joseph "Billy" Baldwin (born February 21, 1963) is an American actor, producer and writer known for his starring roles in such films as Flatliners (1990), Backdraft (1991), Sliver (1993), Fair Game (1995), Virus (1999), Double Bang (2001), as Johnny 13 in Danny Phantom (2004–2007), Art Heist (2004), The Squid and the Whale (2005), as himself in Forgetting Sarah Marshall (2008), as Senator Patrick Darling in the drama series Dirty Sexy Money (2007–2009), as Batman/Bruce Wayne on Justice League: Crisis on Two Earths (2010), as William van der Woodsen on Gossip Girl until December 2012, and as Gordon Flint on Parenthood.