Absolutely correct regarding medicare/ss/military. Its an issue. What will get cut? Enough things that we can start to have a real conversation about how much "government" we're all willing to pay for.
"What exactly will get cut?" - Make you a deal - set a timer and do 10 minutes of research on the subject and come back to report you found NOTHING that could be reasonably and easily cut?
EDIT - so far I haven't heard anyone claim we're going to balance the budget via this mechanism. The goal is to CUT WASTE and IMPROVE EFFICIENCY. I see this as a basis for having a real conversation about taxation personally.