Nah. I've never really enjoyed any of the Weezer Christmas songs. Neither covers of classic Christmas songs or those two they wrote. I am not a scrooge! I promise!
Speaking of "What's This" from Nightmare before Christmas... a bunch of bands covered songs from that back in 2006 for the re-issue. Fall Out Boy did that one I think and Marilyn Manson did "This is Halloween" (which was the best IMO)