Worst Movies of All Time?

Wow! Ouch!
I can definitely disagree with you on two counts Reyn:
Mulholland Drive and Syriana. In a sense, I can understand why you might hate the first. David Lynch is a tad difficult to swallow. But is Syriana worse then say Norbit (2007), Basic Instinct 2 (2006), Cat Woman (2004), Battlefield Earth (2000), The Phantom Menace (1999), Showgirls (1995), etc...?

Sure, its heavy handed and preachy but I believe Clooney deserved his Supporting Oscar that year.

Hmmm, meh!

I understand he screwed up his back during the making of that movie.

As for the movies you listed, I'm sure they would be good choices, too, but I haven't seen them.

They're lots of movies my wife and I will watch for 10 minutes on TV, hate it, and turn the channel.

So, if I had a super memory, I would be able to give you a comprehensive list, but those 3 popped up in my mind. I didn't enjoy them, but others may do.

I like my movies a certain way, and if they don't fit that ideal, then they'll not get a good review from me.

There's probably a lot more stuff I can't stand that others may raise an eyebrow and wonder why!

And, for that matter, for the stuff that I do like.

Robot

When you mentioned, Robot sans year of release, I'm going to take a guess that you're referring to the Bollywood film, Endhiran (2010) because there isn't a prominent Hollywood film that goes by that name.

Missed that one when it came out in extremely limited release here in the US. Though I think I saw a clip of it being made fun of on our TV clip show, Talk Soup.

It actually might be the first Bollywood film mentioned in this thread.

None of these movies have even been released but I'm sure at least 2 or 3 of them will deserve to be on this list.
The 4 Least Anticipated Movies of January 2013
http://www.cracked.com/quick-fixes/the-4-least-anticipated-movies-january-2013

I have to say 300.

"The Grand Budapest Hotel". I, who rarely goes to the movies (I see a lot of flicks on streaming) made it my business to see this film in a theatre when it first came out. It had such wonderful reviews.

I walked out, in utter disgust, in 20 minutes.

Frankenstein Island (1981): An utterly insane fever nightmare of a horrible horrendous hobbling film.

A Streetcar Named Desire.

Pretentious to nth degree.

Only movie I've ever walked out on.

The only movie I've never been able to finish and I have tried to watch 3 times...

Novacaine

I've seen an insane number of terrible terrible terrible movies.

Birdemic (2010) and Manos: The Hands of Fate (1966) are bottom of the cinematic barrel. But neither was as painful to watch as
Carnival Magic (1981) .

What Dreams May Come Again, starring Robin Williams.
Watch this short segment and join me in vomiting.
How many cinematic cliches can be packed into two minutes? Quite a few it seems.
Watch the dead Robin Williams say goodbye to his grieving wife then fade out into the distance as he walks away (notice also that though she was "crying," there are no tears on her face), then then he walks along a tunnel toward a white spot. Fade out again (high tech special effect) then he wakes up in a field of flowers-made of paint. Now cue his old dead dog, who is now young again since this is the afterlife. Of course this being filmmaking for idiots, the filmmaker will assume you won't figure out that it's intended to be the same dog, so Robin Williams must say "Katie, it's you, you're young again!" Barf barf barf. Funny how the dog running through the flowers made of paint isn't covered with paint. This is one of only a couple movies I've literally walked out of theaters upon, rather than waste even one more minute of my precious life.

Oh. I loved What Dreams May Come. Seriously.

If you walked out, how do you know it didn't get better?

It's kind of like a rabid dog that bites you twice... You could walk away or shoot it, or hang in there... how do you know it won't turn into the best dog ever? Um... well, 1) because it's rabid, 2) because it has bitten me twice already. I'm not judging, I'd watch WWE wrestling or the Three Stooges... yes they're corny and you'd probably hate them, but I think they're more honest to their genres than What Dreams May Come posing as a movie.

MANOS: THE HANDS OF FATE (1966)

Twilight

Deadpool is my least favorite movie ever