Since I can't remember what movies I've seen this year I'll just go with two I've seen recently: Zombieland and District 9.

Both absolutely amazing.

-edit-

Was Up released in 2009?  Then that is my favorite movie of 2009.

I should have looked at this list before posting...

Anyways, going through your list of movies I recognize:

• Inglorious Bastards-- Really?  I heard meh things about it but I still kind of want to see it.
• District 9 -- As stated above, amazing.
• Star Trek -- bleh, it wasn't bad but it wasn't good either.
• Zombieland -- great great great
• Coraline -- Still want to see this one
• The Hangover -- I *loved* this movie.  It's so nice to have a nice rated R comedy in the sea of shitty tame romantic comedies.
• Watchmen -- wait, that was in 2009?
• I Love You, Man -- Another great comedy.  I actually didn't expect to like this one.
• Extract -- I love Mike Judge but this movie just wasn't very good.  It started out good but I was just bored by the end.
• Harry Potter and the Half Blood Prince -- blah, they covered the interesting and important parts in the first and last 10 minutes and left the middle two hours to Ron and the chick (because I can't spell her name) being stupid teenagers.  I would rather have that be a total of 20 minutes and spend the rest of the movie on the actual important parts.
• The Invention of Lying -- Fun concept, shitty movie.  Again, started out good but by about 1/3 way through the joke just wore extremely thin and I was ready for it to be done by 1/2 way through.
• X-Men Origins: Wolverine -- FUCK YOU (not you axum, fuck you to the twat that fucked up that movie and the Marvel characters/timeline in it so badly).
• Madea Goes to Jail -- I'm afraid you listed this one incorrectly, it should be Tyler Perry's, a film by Tyler Perry starring Tyler Perry Madea Goes to Jail produced by Tyler Perry.  Fuck him.
• The Proposal -- remember that sea of bad romantic comedies I mentioned earlier?...
• All About Steve -- WHAt!?  This movie wasn't fantastic by any sense of the word but it was actually one of the better bad romantic comedies and worth watching.

Moon, the best science fiction movie I've seen in a long time.

Is that the one with Kevin Spacey as the robot and that guy from Matchstick Men?  If so, that movie was pretty good and they both did an amazing job in that movie.

Yeah, it was. Mid-summer, I think.

Taken, Ingloriuos Basterds, Transformers 2 and Halloween 2

Everybody who's saying Taken:

....Do you mean the Liam Neeson movie?

2009 had a lot of epic movies... a lot of epic fails too (Transformers 2, Terminator Salvation)

For the best movie of 2009 (and I would easily say the best of the decade):

Inglourious Basterds

2nd place goes to:

District 9

3rd place:

Observe and Report

4th place:

Zombieland

I haven't seen Zombieland... and I'm a huge fan of zombie flicks. Is this game still in cinemas in the US? I hope they'll show it in cinemas here in the Netherlands.