My internet went out for most of last night, so I didn't get to post this when I had wanted to, but....
The Avatar 2-hour finale Sozin's Comet: The Final Battle was AWESOME!!
If you didn't catch it last night, it's on again today, on Nicktoons network (not Nickelodeon, apparently, where it aired last night).  At 2 pm and 4 pm here in Arizona, probably 5 and 7 pm EST I suppose?
The fight between Aang and Firelord Ozai was the best part, and took up like half an hour or so by itself, though they split it up a bit.  It seemed really appropriate when Aang made a sort of planet-like surrounding of all four elements around him, and kicked arse.  Toph's fight on the airship was sweet too.
I think only two minor bits disappointed me; Sokka didn't do much swordfighting, and Katara didn't do a lot with her waterbending skills.  They were both a bit more impressive on the Day of Black Sun or other times.  Otherwise, an awesome finale.
It did look like they're planning some kind of sequel though to cover a few loose ends, like whatever happened to Zuko's mother.  They didn't show what became of Azula, either.  And I'm curious if Aang would ever be able to re-establish the Air Nomads, or if he really will be the last airbender in the history of that world.