I didn't watch the old TV show but did at least Wiki it before going to see the film. I'm not sure if fans of the series will like the film, but I enjoyed it. It was not the comedy the trailer made it out to be (not sure whose fault that was) but after the google-ing the series I expected it to get darker. I think it actually does that fairly well, it has some nice humorous bits but starts to get darker towards the middle and end. It was a fun film that I enjoyed and while I probably wouldn't see it again in theaters it is at least in the running for owning one day.
"All this has happened before --"
"But it doesn't have to happen again. Not if we make up our minds to change. Take a different path. Right here, right now."