- Boyd Gaines was nominated for Broadway's Tony Award as Best Actor In A Musical for his starring role in "She Loves Me."
- Portrayed "Captain Bartholomew "Mac" Mackey" in an audio book version of Tom Clancy's "SSN" (1996).
- Played "Seimi Tauber" in "The Good German", a play by David Wiltse, at the Westport Country Playhouse (June 25-July 12, 2003).
- Narrator for audio book version of "Everything's Eventual: 5 Dark Tales" (2002, author: Stephen King), segment "The Little Sisters of Eluria" from the Dark Towers series.
- Played the lead role of "Robert" in Roundabout Theatre Company's revival of Stephen Sondheim's "Company", in the mid-1990s.
- (October 2004 - January 2005) : Played "Juror #8" in the Roundabout Theatre Company's Broadway debut of Reginald Rose's play "Twelve Angry Men".
- (April 2010) He acted in A.R. Gurney's play, "Sylvia", at the George Street Playhouse in New Brunswick, New Jersey with Rachel Dratch (played "Sylvia") and Kathleen McNenny in the cast.