http://jacksonupperco.com/2014/08/05/the-ten-best-the-mary-tyler-moore-show-episodes-of-season-five/

I'm with you that "Not A Christmas Story" is the best ep of Season 5, although strangely enough I don't consider it a true Christmas ep that I watch around the holiday because it wasn't actually "on" Christmas.

Runner-up for me is "Ted Baxter's Famous Broadcasting School", which again having a journalism background I can really appreciate. The way the "faculty" has to go through with its lessons even though there's only one student gives me belly laughs every time I watch it.

Second runner-up: "A Girl Like Mary". Sue Ann was awesome this season, and the final Phyllis eps were great, too.