Two more Leopard reviews, if you enjoy reading about operating systems as much as using them: Andy Ihnatko: What's Leopard really worth? And for much, much more detail, John Siracusa's Ars Technica review.

I won't bother with a full Leopard review of my own, but I will say this after 20 minutes of playing with it: Holy crap it's fast! It's like everything happens instantaneously. Damn.