Worst Actor or Actress?

Now, I know that the quality of acting depends on the script, the director, etc. But who is consistently the worst actor? Those who threaten to displace Keannu Reeves from the title? ;)

Got to be Nicholas Cage!

Tom Cruise

Sam Worthington.

Hayden Christiansen

Jennifer Aniston.

i would say Keanu has to take it, hayden whats his name is close.

Jake Gyllenhall can have my main vote

I thought an "actress" is called an Actor now? because of sexism and equality... yes apparently an actress is less of a meaning than an actor.
worst actor for me is Danny Dyer.
Hollywood actor is Nic Cage, he seems one dimensional, he always has his over the top acting style no mater what movie he is in and it makes the movie your watching un-watchable... for me anyway.

Keira Knightley.
She was OK in Bend It Like Beckham, but become progressively more wooden since.

sam worthington look at the films he has done and you will know he is bad, really bad.

i loved terminator 4, he wasnt great or even good in it granted but I liked the film

Do you include Moon as bad? I thought he was great in that. Quite important, really, as he was the only one on screen for most of the film.

He's in Moon? Hmm, that's on my "to watch" list, and that puts me off. Or is that the film that "launched" him, pardon the pun, so he might actually be good in it?

Moon?? That's Sam Rockwell!!!
Sam Worthington is Avatar and Terminator Salvation. But I can't say he's bad yet, as he's been type cast in every film i've seen. If he does a serious acting part then i'll make a judgement.

My main gripe is that he can't hold an accent.

Moon?? That's Sam Rockwell!!!

LOL how can u confuse Sam Worthington and Sam Rockwell !

Sam Rockwell is awesome !

For me it has to be Will Smith.

Constantly cast in main roles and has ruined many a film.

Plus he's as funny as cancer.

I do agree with Will Smith I just dont see the fascination with him. I have enjoyed the odd film with him in. Enemy of the State, Pursuit of happyness come to mind. But I would say he is a movie star and not a actor

Robert Pattinson and Kristen Stewart.

ANYBODY who thinks these two are the greatest screen actors on the planet is in SERIOUS need of seeing a doctor.

Worst actor with a big enough resume to really judge = Keanu Reeves, Dennis Quaid or the British 'hard' guys (Gerard Butler, Jason Statham, etc)
Worst actress with a big enough resume to really judge = Keira Knightley, Renee Zellweger, Sarah Jessica Parker etc. Basically, anyone who almost exclusively appears in shoddy chick flicks

Gotta be Arnie - wooden or wooden ?

but its Arnie ?? don't people like Arnie and Stallone get a free pass to act as badly as the like ?

I think its the point that there are "Movie Stars" and there are "Actors" and they are not and don't have to be the same thing ?

Not sure if she's the worst (and I'll apologies now for adding MANY a name later when they come to me....but I have to put my 2 pence in for Drew Barrymore and Channing Tatum.
How those 2 crimes against the screen continue to get work (see Charlies Angels Full Throttle and ANYTHING with Tatum in as evidence) is a bigger mystery than what happened to Ameila Earhart.

I find myself disagreeing with most of the choices people have mentioned so far. Will smith, keanu reeves, Sam worthington. All reasonable actors as far as I'm concerned. Granted they're not likely to trouble the oscars any time soon as none of them would be first too mind as being great actors but I think it's more down to their choice of films which tend to be flashy action films where acting takes a back seat to the script, character development and acting. I think they've certainly been competent in their films.

These type of actors will never hold a candle to the true heavyweight acting powerhouses such as de niro in his prime, Pacino, jack Nicholson, clint eastwood, gene Hackman, Gary oldman and Morgan freeman. These are guys that can really capture the essence of characters they play and have a certain magnetism that holds a viewers attention.

At the end if the day it comes down to the style of the film. Films like godfather (any of them), heat, the unforgiven, Leon give actors a much better chance to show what they can do as opposed to star wars, the matrix, avatar and other such films.

Val Kilmer would be high on my worst actor list as I can't remember enjoying many films with him in and I find him very wooden yet even a film like heat made him act a bit and showed he has a glimmer of potential given the right choice of film.

Madonna - or is that too obvious? On a used-to-be-related note, I think Sean Penn is a one-note symphony. Tim Robbins, half a note. But there are so many bad ones: Matt Damon, Leonardo diCaprio, James Franco, Paul Walker, Ryan Reynolds. Adam Sandler? Good God, why?