I faithfully watch Ghost Hunters and Ghost Hunters International (though I really only like the Irish guy). They often times get EVP responses in the native tongue of where ever they are...apparently the language barrier is not an issue for ghosts.
I've witnessed a bunch of stuff first hand, so I am a believer. I love that the GH guys set out to disprove the information they're given rather than the other way around.

They repeat themselves at every show for the people who are not regular viewers. I think this is helpful. Just because I know what they're talking about doesn't mean every person viewing that night does.

Sins, Jason and Grant tell people all the time to set up their own equipment to catch the ghosts...but they wouldn't get on TV without the GH visit first :-)