David was born on my birthday - August 30th, but 21 years earlier than me. You've doubtless seen him at least once - from his early roles on Family Ties and Hill Street Blues - to his recent appearance on Without a Trace, but he's probably remembered most from his role in Crazy People, playing the "Hello" guy (George). He also had the role of Todd Feldberg in Cagney & Lacey, starring Tyne Daly, reprising his role in two of the reunion movies.
David also appeared in Chill Factor with Hudson Leick, and let's not forget Airplain II, with Shatner. Poor guy. ;)