Christmas events (see the Church calendar) are performed almost every day of the season, including the musical production Savior of the World, the Mormon Tabernacle Choir Christmas Concert, and the First Presidency Christmas Devotional.
The devotional is usually held the first Sunday in December and will be broadcast from the Conference Center (free tickets are required) to church buildings world wide. All are welcome to come and enjoy the devotional in Temple Square or watch the broadcast from a local Stake Center.
If you've never seen the lights on Temple Square they're well worth the trip. Come celebrate with us Christmas and the birth of our Savior, Jesus Christ!
See these other great Christmas resources.
Photos: Public Domain GNUFDL; Copyright Leon7 & Brian Davis