Solid, ordinary-looking character actor with a firm gaze and a somewhat tough, rueful expression, Clapp enjoyed his most well know role on the acclaimed if controversial ABC police series "NYPD Blue" (1993-2005) as the insecure detective Greg Medavoy, the only character aside from Dennis Franz's Sipowicz to last throughout the series' entire run. Although born in New Hampshire, Clapp studied drama in Canada and first gained experience as an actor in regional Canadian productions of Shakespeare plays and other works. He made an impressive feature debut as Chip, a senator's aide, in John Sayles'
