TV series that Finn has had recurring roles on include Dawson's Creek, The Practice, The X-Files, Strange World, NYPD Blue (he also appeared two other times on Blue as different characters), Chicago Hope, and eight episodes of Brooklyn South.
Born to an Irish-American family in The Bronx, New York, he graduated from Eldred Central School in Eldred, New York, in the year 1970. He later joined the Navy for a few years, after which he entered the acting business.

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