Am completely with you on Avatar. There was no storyline and the dialogue left a lot to be desired.
I watched it in 3D and it did make me feel sick. Had a splitting headache when we left the cinema and felt like I was going to lose my dinner.
Even in 3D it couldn't capture this particular member of the audience, and if I hadn't been feeling sick, I am sure I would have fallen asleep 20 mins into it.
It is so refreshing seeing someone else not impressed as everyone else on my friends list loved it.
Thank you :)