I'm sure I'm not the only one who likes incandescents... so I've been grabbing them before they are completely illegal (100 watts next year or 2011???) thanks to Bush 43.
Walgreens has an off-brand for a great price. 12 for $3.00. 60 watts or 100 watts available. They are NOT the best, I'll admit. They last a few months in outside lights... so I just try to grab a box or two when I stop at Walgreens.
Not sure if the same deal is availab elsewhere, but just in case!