My work copy of Precious, um, Snow Leopard is here, and I installed it tonight.
Wow. I am impressed. Everything in the OS really is faster. Mail flows faster. Exchange integration does 80% of what I could ever need in Outlook. Safari is a LOT faster. The only feature I've lost so far is network scanning for my Brother MFC-420CN, and I'll pester Brother and Apple about that tomorrow.
Of course, my adventures in .0 land are probably only just beginning.