From what I've seen, the general concensus is that OG Kush = Chemdog x (Old World Pakistani Kush x Lemon Thai)

As to what part of the planet this union occurred... I don't know enough to care.

I'd like to meet these guys in the Chemdog saga! Isn't Pdub a strain or guy from Colorado? Man, it'd be sweet to meet someone from the "legend" and get the real scoop.