So I just made a huge list of companies and things I expect too see show up at PAX 2010.  Some of it is based on what I've seen at previous PAX setups.  Some is based on what these companies were showing off at San Diego Comic Con.  Some is pure speculation.  There are a few things I feel that people may expect to be there that I think won't show up for one reason or another.  
 
Anyways, here's the list:  Stuff I expect to see at PAX 2010
 
Among the things that will be noticeably absent will include:

• Nintendo 3DS - While I expect PS3 Move & Kinect demos and there were PSP Go on display at the PAX & SDCC of 2009, Nintendo didn't show the 3DS at SDCC and I can see them deciding to hold off on letting people put this in their hands since it will draw HUGE lines and is so dependent on individual experiences that they just won't be able to show off too well.
• BioShock Infinite - Yeah, everybody would LOVE to see this show up, but it was only just announced so the most they probably could show would be the announcement teaser trailer.
• Mass Effect - Its been long enough since the release of Mass Effect 2 and way too soon for them to show off Mass Effect 3.

• The Legend of Zelda: Skyward Sword - Nintendo has been kind of quiet about this and I can see them staying as such since its almost a certain buy for many people and it probably won't be easy to have a demo that can sell people who are on the fence since it will be getting hogged up by the people who are already going to buy it.
• Batman: Arkham City - Another game that was too new.  Maybe a sizzle reel, but probably not too much new at this point.  Hopefully we do get a Batman Batman Batman cosplay trio to show up at the Giant Bombcast panel instead.