I saw District 9 yesterday and I found it quite interesting. It's not a masterpiece like Gous said but it's not a Starship Trooper remake. In fact it's miles away (for better) from the original Starship Trooper in terms of content and cinematography.
As for the Avatar, it might sound radical, but I don't even consider the hypotheses of seeing it in any kind of format; I'm just not curious at all. I didn't like any James Cameron's movies so far and I don't like movies that are mere technological show off. Like in literature I avoid writers that I don't like.
Like uncleal said this depends on what you expect to see in a movie. If you just want to feel entertained, and nothing wrong with that, it's one thing. But if you feel that cinema is a kind of art form than to be entertained might not be enough. For me it's more gratifying to see a movie like Apocalypse Now (picking Gous example) than to see Star Wars.
And I agree with you Gous, Apocalypse Now, the original editing, is a masterpiece. I didn't like the Redux version. Do you know Gous, there is a workprint version of 330 minutes (bad quality) out there in the net?