Continuity mistake: In the scene where Santa is getting married, just after they kiss and Santa looks like Santa again, you can see in the bottom left hand corner Bernard and Curtis giving each other the thumbs up. In the very next shot, it repeats them doing this again only in a close up. (02:33:00)
Continuity mistake: When Natalie first meets Kevin, the strap of her black dress goes from up, to down, then up again. (00:20:40)
Continuity mistake: In the last shot of Day-Day in bed with two girls, his hat falls off, then is back on, between shots.
Continuity mistake: In the scene when Justin's father is coming out of the shed dressed as Santa Claus (the second time), the clock next to Justin reads 12:00. When he hears the "Ho Ho Ho" and gets up out of bed to go to his window, the clock says 11:56. (01:15:40)
Continuity mistake: When Kermit is in the park looking at his plaque he wipes off all the snow and reads it. In the next shot of him walking to a nearby bench the plaque is covered again but it is not snowing heavily enough to have been covered so fast.