John D'Aquino (born April 14, 1958)[1] is an American film and television actor, best known for his role as Lieutenant Benjamin Krieg in seaQuest DSV,[2] Joel in the film Pumpkinhead, U.S. President Richard Martinez in the Disney Channel Original Series Cory in the House, and for his appearance as Ulysses in Xena.

[3] He is also known for his roles as Frank LaMotta in Quantum Leap,[4] Todd Gack in "The Calzone" episode of Seinfeld,[5] and playing Sally's teacher boyfriend, Mr. Randell, in 3rd Rock from the Sun.

[2] D'Aquino's first television credit was a main cast role in the short-lived (six episodes) 1985 series Wildside, a mid-season replacement that was placed against The Cosby Show – the top-ranked show on television at the time.

He has made guest appearances in episodes of Baywatch, Magnum P.I., Matlock, Melrose Place, Murder, She Wrote, Seinfeld, Sliders, Xena: Warrior Princess,[3] Crossing Jordan, Hannah Montana, Monk, Shake It Up, Lois and Clark: The New Adventures of Superman and had recurring roles on 3rd Rock from the Sun, JAG, Quantum Leap, and co-starred in Comedy Central's That's My Bush!

This article about a United States film and television actor born in the 1950s is a stub.