I'll probably have them all running in the backround while I work, but the one I really look forward to is Nintendos.
I usually like Ubisofts conference because I enjoy Aisha Tylers hosting.
Sonys press conference this year might actually make me want a ps4 for the first time.
Xbox will probably just give me little stabs of sadness between the boredom, because of games like Ori and the blind Forest (maybe new banjo this year?) that I'll probably never get to play since I can't afford to spend money on a console that primarily has games I have no interest in....
For EA I have nothing but a giant MEH, but I'm interested in Squares and Bethesdas conferences.
edit: I keep forgetting Bioware is EA published so I might be actually awake for one or two minutes of that conference after all.