I too was really disappointed in GI Joe.
This should have been a great flick but it just didn't work for me.
Star Trek was great and I totally aggree with Gonk about McCoy and Scotty.

Keeping with the topic of very bad flick, I'd have to cast my vote for Battlefield Earth. Maybe there's a mega shark somewhere that will leap out of the ocean and eat this film.

Straying from the topic:
Star Trek was really good.
Casino Royale was visually outstanding.

Thanks for the tip on GI Joe: I won't waste my time.

How about Crank 2: High Voltage?
Talk about a real stinker!!!!!

Can't say that I've encountered Crank2 or High Voltage.
There are, of course, some truly awful movies in the blue movie,Teen and mayhem markets, but I think the worst I've seen that passed itself off as regular cinema were:
1. The Druids
2. Ghosts of Mars
3. The Last Templar

I will probably see Avatar again in the theater and I'll eventually buy a BluRay copy because it is a visual treat but its plot is very worn. Hollywood regularly trots out movies that bash the human race over its stewardship of our planet. Do you remember Silent Running? Avatar combines human's disregard for the planet and another race in much the same way Dances with Wolves did. The only twist is the "indians" won in Avatar. It is a good thing it was eye candy otherwise I'd have fallen asleep.

I'd like to see Avatar but given that I can't take the boy I'll probably have to wait for it to come out on blu-ray.

As far as stinkers go I'm adding "Sphere" to my list. I re-gifted the thing at a family re-gifting Christmas a few years back and the darn thing has turned up every year since.

Bad movies are disheartening, but bad movies based on good books are the worst. I love me some Neil Gaiman, and I sure hated Stardust. Yawn.

PS, Star Trek was good, but I waited to see it until I saw the At the Movies guys call it one of the best movies of the year. Maybe not that good. Plus, if the Nero guy went back in time chasing spock, instead of waiting 29 years for him, why didn't he just, I don't know, try to save his damn planet?

Bad movies can be disappointing, or they can be amusing. Bad movies based on good books? There is no up-side. I started reading science fiction as a kid with Robert Heinlein novels from the late 40's and 50's. Imagine my frustration with Starship Troopers in '97. Puppet Masters in '95 wasn't really any better in that regard.

Right there with you. I did my english thesis on Stranger in a Strange Land, and Lazarus long remains one of my favorite literary characters. I have a friend who swears the troopers movie is the pinnacle of black comedy. Sure - I just laugh and laugh when I see doogie howser/barney in his leather SS outfit at the end. Plus, they have big spaceships that can't manage to avoid flying bug poop (twice!), and oversized bb guns for the infantry.

I missed one (at least)
Australia had to be the worst flick released in 2009.