Can't remember the exact set-up
S.T. V: the Final Frontier
Kirk: Scotty, you're a lfe saver (Turns, then he Bones and Spock bolt down the access tunnel)
Scotty: (after turning, and starting to walk the other way) Twert nothing, I know this ship like the back of my hand...*PLANG!!!*-straight head-first into a pipe, then straight down to the floor. I laughed, re-wound, and laughed again:D.
And, even the scene prior:
Kirk (while listening to some pinging sounds from a wall of the brig): Stand...Back...Stand Back??? STAND BACK!!! (bolts to the other side.)
*BOOOOM!!!* (Rear wall gets 'blowwed up real good':D)
Scotty (after the dust/smoke settles): Well, don't you recognize a jail-brake when ya' see one?!?
Again, laugh, rewind, repeat:D