David B. Walton (born October 27, 1978) is an American actor. He is known for his role in the television sitcom Cracking Up (2004), as Liam Connor. He has starred in several television programs, including the drama series Heist (2006), and on the NBC comedies Perfect Couples (2010–2011), Bent (2012), and About a Boy (2014–2015). He played Dr. Rick in the comedy film Fired Up! (2009).