Just saw this myself, here is my mini review >_>:

Watched (avatar) The Last Airbender today.

This movie wasn't as bad as everyone makes it out to be, but it definitly has a bunch of flaws that just stick out and could very well make you dislike it.

First of, the 3D, this movie was converted into 3D just like Clash of the Titans, and just like in that movie, it was pretty bad for Airbender, studios really need to stop this conversion stuff just to make a quick buck (though I didn't pay extra cause I already had a pair B) ).

Second, the narration.
I don't understand why every "progression scene" had to be narrated, just to stitch 2 other scenes together, which leads into a very weird sence of progression, like it suddenly being a few weeks later and pretty much kills the character development.
In fact the only character that got properly developed was Zuko.
This also causes the "decent" dialog to just feel illogical and shitty at times.

Third, the runtime.
Now I understand you can't pack an entire season worth of material in a single movie without cutting some stuff out, but this movie runs for only ~100 mins. It would've really been much better to even have 30 mins extra. This also faults the feel of progression.

Now it wasn't all bad.
I really liked the music and the visual effects, the bending was really well done as well, though it could've been a bit more martial-artsy and drawn out like the fights in the series.
The fights near the end of the movie were really good though, I especially loved the 4 water benders just outright murdering the firebender by just watching him slowly die by drowning.
The acting was so-so, but Zuko and Iroh were good.

Now if M. Night just fixes the bad things for the next few movies, they could be pretty fantastic.. >.>.

Oh and Seychelle Gabriel as Yue was.....:3 (♥omgz♥) >_>..........
yeah..... <.<