* ContrivedCoincidence: Keaton's character alters the $1 gift to say $4, which happens to be the exact sum the thief got for pawning the watch.
** The pool game.
** The quick change.
** The motorcycle ride.
** That's one tricky bike ride.
** Basically every stunt in the movie, aided by the knowledge it's Keaton doing everything himself.
* CrowningMomentOfFunny: The motorcycle ride, especially Sherlock Jr.'s DoubleTake when he realizes he's riding solo.
** The ending, which crosses into definite GettingCrapPastTheRadar territory.
** The scene at the very beginning with the spare dollars.
** "Shadow your man closely."
* VisualEffectsOfAwesome: The extended jump-cut segment at the start of the DreamSequence. No ChromaKey here -- for each shot, they went to a new location and Buster carefully recreated his last pose at the precisely the same distance from the camera.