Well I only ever took the basic econ class in college, so I don't know what the opposite of suply side is. What I do know is if you spend more than you make then you go broke and then bad shit happens. I find it very hard to believe that just because the US economy is vastly larger than my economy that this rule doesn't apply.
GW has cut taxes and increased spending. The deficit is gigantic now. Eventually we're going to have to pay, and it ain't going to be pretty.