For those of you in the bay area, I will be giving a public lecture at SLAC (in Menlo Park) tomorrow, mostly about Dark Energy and what the universe is made of. Familiar topics to our regular readers, but hopefully it will be fun. The lecture is at 7:30 tomorrow (Tuesday) evening, in the Panofsky Auditorium at SLAC -- intended for a general audience with no particular knowlegdge of the contents of the Universe. The folks at SLAC created this appropriately halloweenie poster for the talk (click to get the whole thing). A bit more information, including maps to SLAC as well as links to past lectures in the series (held bi-monthly) can be found here.