I believe I found it, but I'm not sure and can't quite tell from the trailer

It's called Kate & Leopold, trailer here:
http://www.youtube.com/watch?v=zpSlJaP2sHw

If it's the one I think it is,...

Jeez you're forgetful..

Remember any actors or at least what they look like?
:D
There was only 1 actor teleported and he was in his 20s.

ffemt53ffemt53, thanks so much! But that's not the one...

It was about a young knight from the medieval age that time travels to the present.
Then he is with a girl that helps him adapt to today's world. He also is a really good sword-fighter so he goes to...