If you participated in The Lost Experience, which occurred between seasons 2 and 3... then you are in for a treat. They are doing another one. Unlike the previous, however, it will only be about a month long, and will terminate at the dawn of Season 4. So oh well, it's much more commercial, and not AS cryptic, but it's still radical. If you wanna do it, I am participating actively in it. Start your adventure at www.find815.com and go from there. You have to register, but it's an ABC.com affiliate site, so you won't get a bunch of crap emails.