Shatner, William. “Hamlet / It Was A Very Good Year.” The Transformed Man. Decca, 1968.
I nearly forgot Captain Kirk's famous version of the "To be or not to be" soliloquy from Hamlet.
All right, so it didn't happen exactly that way. I've taken the audio from Shatner's 1968 album that combined the classics of literature with modern song lyrics—all in the inimitable style of William Shatner—and grafted it to the "Trouble with Tribbles" episode. It actually works, in a weird, wild, wonderful way.
Links: A Gateway to Star Trek Information at Wikipedia.