3 hours of (admittedly quite cool) special effects scenes strung together with almost no storyline at all.

It's all such a cliché - bad guy is sent to kill good guy; good guy refuses to fight and goes into hiding; bad guy finds good guy and threatens his family; good guy fights bad guy and kills him; except the bad guy survives; cue sequel

So many pointless scenes that do nothing to advance or enhance the story. Pseudo whale hunts go on and on - we get it, the bad guys kill the friends of the good guys. Endless scenes of characters swimming around admiring strange creatures.

The dialogue is appalling - all "bro!" and "Go, go, go!".

The first Avatar was unusual with good SFX. This one seems just like a collection of those SFX scenes they couldnt fit into the first movie, but that cost too much to throw away.

I won't be watching Avatar 3, that's for sure.