Can't see why they're bringing it back (well I can - money), but it was so popular and funny because of the time it was done. You couldn't get away with a lot of it now, because it's not "PC enough" and will always offend somebody somewhere.
I love the originals, even though they're older than me, and will quite happily sit through an episode (or two) if it's on when I'm flicking through the channels.
This is a huge risk though. Would it tarnish the originals a bit if it flopped? I don't think it would, but the bar is going to be set so high from day one, that it's really going to have to go some to do well.