LOL we all have those moments, I thought I was a genius for thinking I could calculate PI by doing a double integral over x,y from 0 to 1 using the Heaviside step function with (x^2+y^2) or something I can't remember... Basically it was that in the integral the step function is on if x^2+y^2 is less than 1 and off if >1, so you would end up with PI/4. Anyways it didn't work out :)
