I'm always excited to see what Universal comes up with. Some years have been amazing, others not so much. In my opinion, the houses two years ago for HHN 21 were some of the best ever. But last year was pretty "meh". The preview stuff for this year looks pretty good, though, so I'm hopeful. Especially excited to see the American Werewolf in London house :-).
Things felt like they were slipping a little beginning with HHN XX. So much so that two years ago we actually thought Howloscream at BGT was better. But it looks like this year HHN is set to hit it out of the park!
Even if you don't tweet, you can go to http://www.twitter.com/HorrorNights the night of the event and scroll through his tweets until you find the password.