Thomas Allen worked on a variety of projects during his entertainment career. He worked in television in his early acting career as well, including a part on "Jim Henson's Ghost of Faffner Hall" (HBO, 1989-1990). He appeared in a number of television specials, including "Kiri & Friends" (1985-86), "Le Nozze di Figaro" (PBS, 1985-86) and "Sir William Walton's 80th Birthday Concert" (1985-86). In the nineties, Allen devoted his time to various credits, such as "Love Hurts" (1990) starring Jeff Daniels, "A River Runs Through It" (1992) and "Cosi Fan Tutte" (PBS, 1996-97). He also worked on "Cousin Skeeter" (Nickelodeon, 1998-2001). He also appeared in the Russell Crowe box office smash dramatic adaptation "A Beautiful Mind" (2001). Allen's distinctive voice can be heard on "Harvey Birdman, Attorney at Law" (2001-08). Most recently, Allen worked on "Percy Jackson: Sea of Monsters" (2013) with Logan Lerman.