I think they're mostly alright. Some are horrible, and some are good. Overall, though, they help me get in the christmas spirit, which is neat and stuff.

I'm secretly a sucker for Wham!'s Last Christmas. Don't know why, I just really associate it with christmas and it's somehow a nice song xD

Other than that all the classic Bing Crosby songs and other old christmas songs are great. Judy Garland's "Have Yourself a Merry Little Christmas" is really nice for example.