Without a Clue (1988)

Character mistake: Watson says that there are fifteen windows on the front of 221B Baker Street, but if you look, there are only twelve.

Continuity mistake: In the basement of the Orpheum theater, Holmes takes a lamp off of a wall and places it on the floor. The shot cuts, and the lamp is back on the wall. When the shot cuts again, the lamp is back on the floor. (01:29:25 - 01:30:45)

Cubs Fan ★

Holmes: I couldn't detect horse manure if I stepped in it.

Holmes: How can I be expected to maintain the character when you belittle me in front of those hooligans?
Watson: Character? Are we talking about the same man who once declared with total conviction that the late Colonel Howard had been bludgeoned to death with a blunt excrement?
Holmes: Is it my fault you have such poor handwriting?

Inspector Lestrade: Half a tick, Mr. Holmes. Ye can't go walkin' into someone's residence, pokin' about their personal possessions, disruptin' their privacy... That's for Scotland Yard.