Loudon Wainwright III Actor or Actress (19) Carol & the End of the World (2023) We Only Know So Much (2018) Mosaic (2018) True Story (2015) Sleepwalk with Me (2012) Person of Interest (2011) G-Force (2009) Parks and Recreation (2009) Knocked Up (2007) Elizabethtown (2005) The Aviator (2004) Big Fish (2003) According to Jim (2001) Undeclared (2001) Grounded for Life (2001) 28 Days (2000) Ally McBeal (1997) The Slugger's Wife (1985) M*A*S*H (1972)