And yet not a word about battery power. You'd think that if this is in this one, they'd have it at the top of the list.
Edit: So far with half brightness and daily apps open (Mail, Safari, iTunes, Terminal > vim, TextMate) OS estimates 7:39. It feels like it's still going a little quick, but I could be wrong as I don't always leave iTunes or Safari to do their business.
Current time... 4:05... close TextMate, open InDesign. 56%, est. 2:22 remaining (obv. due to InDesign, even with a small file). No change in brightness.