Continuity mistake: When William gets dressed after his shower, the necklace he wears keeps turning about, note the pendant and knot. (01:17:35)
Continuity mistake: When Holly talks to the leprechaun, his balloons keep changing position. (00:42:20)
Continuity mistake: With Holly's birthday cake came a tape recorder from Gerry, and in the wideshot Holly turns it on with her thumb, but in the close-up with her index finger. (00:30:15)
Continuity mistake: When Holly and Sharon are showing the apartment to the couple, in the first exterior shot from the street, as we hear Holly's voiceover and see her in the center window, all of the window shades on the left are halfway down. In the next interior shot, the shades on the right and left side are up near the top. (00:40:15)