I just got back from the first day of the Penny Arcade Expo. The Telltale booth was great! There were three computers with demos: Two season one, and one CSI. Apparently, the Season 2 demo isn't ready yet, but the trailer is. It's AWESOME! I won't give any spoilers, but I will say that it is neat. :D
Oh, and I got the soundtrack there, as well. Without shipping fees or taxes! And I got my DVD signed a couple of times as well.
Apart from the Telltale booth, there were quite a few wide and varied things. Everything from pirates to orks to barbaric bloodied warriors.