(written from a Production point of view)
One of his earliest television appearances was a guest spot in a 1998 episode of The Practice which also featured fellow Enterprise guest star John Rubinstein. Healy has also appeared on such shows as Profiler, NYPD Blue (with series regulars Gordon Clapp and Sharon Lawrence), Philly (in an episode with fellow Enterprise guest star Steven Culp), CSI (with Debra Wilson), CSI: Miami, Six Feet Under (with James Cromwell, Matt Malloy, Andrew Prine, and Matt Winston), Cold Case, NCIS (in an episode with Holmes Osborne), and Grey's Anatomy.
In addition, he can be seen in such films as Magnolia (1999, co-starring Henry Gibson and Jim Beaver), More Dogs Than Bones (2000, with Whoopi Goldberg and Louise Fletcher), The Prime Gig (2000, with Wallace Shawn and Jeannetta Arnette), Pearl Harbor (2001, with Manu Intiraymi, Cary-Hiroyuki Tagawa, Steve Rankin, Randy Oglesby, Raphael Sbarge, Glenn Morshower, and Leland Orser), Ghost World (2001, with Diane Salinger and Teri Garr), Mr. Fix It (2006, with Paul Sorvino), and Rescue Dawn (2006, with Zach Grenier). He also wrote, directed, and starred in the short subject Mullitt (2000), which also featured his Magnolia co-star and Star Trek: Deep Space Nine guest star Henry Gibson.