I would have loved an episode with a mechanical failure preventing the nacelles from rising to warp position.
Oh, that would've been great...
JANEWAY: "Mr. Paris, prepare to pursue hostile vessel. Harry, open hailing frequencies, set to 'PREACH MODE'."
KIM/PARIS: "AYE, AYE, CAPTAIN!"
(Exterior shot - U.S.S. Voyager)
"_ C L U N K _"
JANEWAY: "Damn, I thought that was embarassing with the Excelsior!"