The West Wing Christmas Episodes Reviewed

We got to keep in the Christmas spirit by mentioning more atypical ways to celebrate the holiday so I bring up the six season-appropriate episodes of THE WEST WING.   Which episode is not a good stand-alone episode?   Which episode has the holiday featured but barely spends much time on making use of that setting?   And which ones are just plain good television in general?     SONGS USED: "The Oval Office To Main Title ," "Walking the West Wing" and "Ways and Means" music tracks by W.G. Snuffy Walden (from the official soundtrack)