(written from a Production point of view)
He is perhaps best known for his role as Detective Greg Medavoy on NYPD Blue, whom he played for eleven years, earning an Emmy nomination for the role in 1994 and a win in 1998. His co-stars on the show included Sharon Lawrence and Michael Buchman Silver. He was previously married to Deborah Taylor, who played his ex-wife on the show as well as the role of Captain Chantal Zaheva in "Night Terrors".
In the same year as his Star Trek appearance, Clapp guest-starred in the Cheers episode "Look Before You Sleep". Deirdre Imershein and Keene Curtis also guest-starred, Kirstie Alley appeared in her regular role as Rebecca Howe, and, of course, Kelsey Grammer played his famous role of Dr. Frasier Crane.
Since the end of NYPD Blue, Clapp has made guest appearances in episodes of Without a Trace (which stars Enrique Murciano), Deadwood (with Jim Beaver, Brad Dourif, Leon Rippy, Paula Malcomson, Titus Welliver, Keone Young, and Zach Grenier), Monk (with the late Stanley Kamel and Juliana Donald), CSI:Crime Scene Investigation (with Wallace Langham and Liz Vassey), Damages (with Michael Nouri), Ghost Whisperer (with Michael Reilly Burke and Melinda Page Hamilton), and Cold Case (with John Pyper-Ferguson and Maury Sterling). He has also starred in the films Trailer Talk (with Ron Canada) and Flags of Our Fathers (with Neal McDonough, Len Cariou and David Clennon). Clapp's next film project is The Golden Door.