The first time I saw this ep, it REALLY confused me. For starters, Jessie's flashback to that traumatic Xmas night spent in that rather grand-looking manison appeared to contradict the suggestion laid down in other episodes that she came from an impoverished background, while Santa's explanation that he couldn't return Jessie's doll because she "didn't believe in him" seemed waaaaaay off the mark, given that the episode's narrative pretty much hinged upon the implication that she DID believe in him, quite fervently at that, even if she was somewhat mistaken as to his true identity. Things made a bit more sense when I read up on how things in the original Japanese version went - there, Santa's excuse for withholding Jessie's doll was that, by the time it had been repaired, Jessie no longer lived in the mansion (implying that it was merely one of the many foster homes which Jessie supposedly lived in as a child), and Santa didn't know where to find her. At least, unlike the English version, it doesn't contradict its own internal logic, but all the same, I have to wonder - what was there to stop from Santa from actually finding her? Why wasn't he able to keep track of these things? Isn't he supposed to know where every child upon the planet lives (according to popular legend, anyhow)?
Most cartoons get their cheesy Xmas episode at some point or other (in which some incarnation of St. Nick more than likely puts in an appearance), and this was Pokemon's, I guess. Not being a huge fan of cheesy Xmas episodes myself, or of Jynx for that matter, I didn't really care for it all that much.