With so many being equally interesting and appealing it's impossible to single one out as a favorite. Warcraft: The Adventure Continues, Warcraft: What's Next, Hearthstone: Fireside Chat, and Diablo III Lore and Story Q & A, The Art of World of Warcraft.
I'd love to see the World of Warcraft: What's Next Panel. I can't wait to find out what the next expansion will be! I'm also interested in the World of Warcraft Raids, Gameplay, Questing, and More and World of Warcraft Q + A About Almost Everything Panels.... Although seeing everything would be the best
World of Warcraft: What's Next! I've been playing this game for way too long and glad that it's still running strong. Blizzard continues to surprise us and improves the game the best they can. I'm curious to see what's up and coming for the future of WoW =]