I also gave it a 10, although it's not my favorite... they did a really good job of hitting most of my problems with the movie (I didn't care for it), although I wish they had mentioned some things that struck me as odd, like... Navi are a good size bigger than humans, though the box of matches Jake carries looks normal sized in his hands, the rifles always seem the same size if a human or navi is carrying it and apparently they had 2,000 navi sized throat microphones in that one trailer to equip for the final battle.
Uh, that would be explained by "The humans made stuff to Na'vi scale in preparation for the mission." Like how they made oversize sets for the Hobbit scenes in
Lord of the Rings. Notice the guns the humans were carrying were human-sized. I call that good planning by everyone involved with the avatar program.
...and now I want a giant box of matches. Dammit.
Anyways, in terms of the rifftrax, solid 10. This really felt like an MST3K episode, with all the obscure-to-slightly-obscure cultural references. I certainly didn't expect to hear that R.L. Stine quip. I was especially glad they kept the long, drawn-out ranting riffs to a minimum here, coming on the heels of the endless stuttering jabs in the
Transformers 2 riff which started to bug me near the end. You can tell they took their time to get this one right. Bravo, guys. Bravo.