If you guys are going to do a debate thing, but you want to let it be wild and loud, keep it on a short timer, those things can drag on.
Best to avoid those types of loud people though, they'll try to dominate the entire conversation and it'll be boring.
You guys should have:
News segment and short commentaries in between them
1 Dedicated topic (Halo Reach? Heavy Rain? Game industry falling? Wii? Etc)
Sales talk
Debate/Game/Gimmick
End