First post, so go easy...
Seems that PG&E is subsidizing Feit Electric 4 packs of 100W replacement CFL's. I just bought 5 packs at the Walgreens on Telegraph in North Oakland, but you can find participating stores in your area here: http://www.pge-cfl.com/
Since this is a PG&E thing, it'll obviously only work in places serviced by PG&E so if you live in Ohio, call your cousin who lives in the bay area.

