World of Warcraft: What's Next. I think that is the obvious one, but after playing WoW since the Beta I'm highly motivated and excited to find out what the new expansion involves. Plus, being able to kill time at work on MMO-Champion looking at all the new content gets me through the dreaded work day!
I'm interested in seeing everything. I don't know, I've never been to Blizzcon, but everytime I watch it online, it's always an incredible experience you get at home. The atmosphere is absolutely phenomenal, so experiencing it live would probably be a dream come true.
Good luck to everybody out there who's participating in this contest =)
I am most excited for World of Warcraft: What's Next panel! I feel as if the announcements to follow will be a once-in-a lifetime moment that wont soon be forgotten!