When Chanukah and the solstice was around, I would acknowledge those holidays because that's what was being celebrated. Now that it's almost Christmas time, I say "Merry Christmas". I don't view it as being disrespectful to other people regarding their holidays because Chanukah and the solstice passed. Granted there are other holidays celebrated on Christmas day, in fact if you look at history there is a Greek legend that has Zeus and a mortal woman have a son, who is to be "The Son of God". Christmas is more well known in our western culture, and with Christians and other people who celebrate Christmas I'm going to acknowledge them and give them the respect they deserve.
So on that note, Merry non-pc Christmas.
If you still have any questions about what I said, feel free to pm me or we can talk in the religion topic in the AM.