I really enjoyed National Treasure as well. I could never sit down and watch the first one but I finally did. They were both A LOT better than I thought they were going to be.

Saw Charlie Wilson's War yesterday, and really enjoyed it. There was a lot of humor, plus I always enjoy a good biopic where I learn something.
Saw National Treasure today, and liked it as well, if not a bit more than the first one...again because of the humor, in addition to the historical aspects, even if these were fictional.
That said, both could have been watched on video just as well, though NT did have some pretty neat cinematography that was probably more awesome being seen on the big screen.