I watched the movie for the first time yesterday and it is great. Way more jokes and D&D references than I remember from the script I got to see.
The amount of D&D references was amazingly consistent to the way I've actually seen it played at the table. D&D love shows in every frame of this picture. Although it is clearly a farcical spoof, it's done in a way that shows respect for the material, especially if you're in the know about D&D.
WARNING: SPOILERS FOLLOW
The scene with Greyfarn and Ignus was a rip from
Star Wars more than D&D, but it immediately reminded me of every game where some player pipes up with, "I want a lightsaber in D&D! Can I get a lightsaber?" That alone was amazingly funny to the gamer culture as I know it.
Leegola attacking the Zoidberg creature reflects so many players I've known that I'd swear I played with her before. I can't count the number of times that I've seen PCs murder creatures that they were supposed to talk to. Leegola even says, "What else can we slay?! Is that a hobbit over there?"
Roberto as the King of Wipe Castle was about as spot-on to the typical nobility of D&D as it could possibly be. The only noble that could help the PCs is incurably insane, forcing them to rely on their own abilities. Titanius Anglesmith even has a line about being the only sane noble that is of any use.
They also worked in a not-so-subtle reference about the Satanic panic of the '80s by having Bender go insane from playing D&D. Although it's still a touchy subject amongst both elder gamers and conservative evangelicals alike, it was handled with just enought tact to be silly.
I could go on all night about how much I love this movie. Futurama and D&D both rank very highly on my list of good things in life, and seeing them together was something like a perfect storm of coolness to me. Man, I'd really love to see the Futurama crew do a D&D-based spinoff...