There'll be plenty more of these, but here're 2 I've spotted: Smart emptying of the trash: How many items are there in your print queue? Now you know with a little badge:

it'll show you some more information. Here's what happens if you option-click on the Sync item. Try it for Airport, Sound and others.

Another small but new feature of Snow Leopard is minimising open application windows to their respective ‘application icon' in the dock (instead of a new icon on the right hand side of the dock). Not bad! click play above or Watch in HD

Looks like when you take a screen cap / grab in Snow Leopard, you get really useful filenames, instead of just "Picture1.png" etc. Check out this how-to video (done with the new Snow Leopard screen recording feature of Quicktime!) (if you are...

So I've just installed Snow Leopard on my near-new 13″ Macbook Pro. It's fast, very fast. Faster than Leopard. The new Quicktime is nice, "stacks" are much improved. Excellent!