The local hardware store was selling 4x packs of incandescents of various wattages at 2 for $1 a few months ago. I bought a whole freaking pile of them... right before actually doing some pencil & paper calculations and realizing how much more expensive they are than CFLs, and wishing I'd have saved my $5.

Well, at least I've got pretty much a lifetime supply of bulbs to use on my dimmers, right? Heck, maybe if I hang onto them, they'll be worth something as collectables!