This year worst film for me it would be batman v superman, but it's not the worst movie ever i've seen, that title would go to some Addam Sandler or Eddie Murphie cheap comedy fart film, the disney animated sequels, Shyamalan films like the last airbender or after earth, and probably the american pie sequels and spin-offs.

I find it hard to narrow down to just one, but some of the frontrunners would be:

Immortel Ad Vitam

Tommy

Zoolander

Meet the Spartans

Mac and Me

Catwoman

Santa Claus Conquers the Martians

Attack of the Killer Tomatoes

Yonggary (The 2001 remake)

wow some of you guys don't watch many movies. The ones listed are bad but not deserving the worst title.

Here is one (probably not as bad as Birdemic, but down there haha)

I mean, people usually watch good movies. I wont say a movie I havent seen, so I might say one that has mixed reception overall.

OT: That I can remember watching, with it's story and characters? I wanna say Paul Blart: Mall Cop (jesus, even the title sucks). There's probably a much worse one, but my head cant remember much.

Hard to go past Battlfield Earth. Recent movies the new independence day ranks up there and I made the horrible mistake of watching Insurgent/Alligient (predictable, bad acting, bad script/dialogue etc)

Don't ever go with your mother to the cinema. 

LOL i watch the 1-3s to justify making the 5-6s watchable

I remember Eddie Murphy's Nutty Professor 2 was so bad that when my cousins rented it we stopped watching the movie after about a half hour into it.

The worst movie I ever sat through the whole thing for (sadly) was this abomination:

This is what happens when you're bored out of your mind on a Saturday night at your local Blockbuster with a few friends and decide THIS movie looks appealing...

Super fast, fast and the furious parody.

Batman & Robin, though I think it dipped into "this is so bad, it's enjoyable .... kinda" though not quite.