In no particular order:
-Loving family (ALL of them!)
-Terrific friends that stand the test of time and distance
-Plenty of good food
-The crazy kiddos (especially when they're not hopped up on prednisone!)
-The luxury it is to be watching television and typing from a beautiful kitchen in my parents' warm, welcoming home
Of course there is so much more, but those are the things that spring to mind at the moment.
Happy Thanksgiving y'all!