A feature I haven't seen mentioned on any Leopard reviews is the cool instant dictionary lookup... I guess it could be just something that I never noticed in Tiger, but in my Leopard (599) I just have to mouse over any word of text, and press Command+Ctrl+D to make the definition of the word neatly display beneath the word itself. If I hold the Command+Ctrl after tapping D, I can slide my mouse over text and get the definition of every word my cursor touches instantly. There is also a drop-down menu to change the dictionary mode from Dictionary to Thesaurus and to Apple, which gives the "

Definition" of a word (The

definition for the word Tiger for example talks about OS 10.4)... And then there's a "More" button that opens the dictionary.app and let's you say, look it up in Wikipedia. Here, let me demonstrate...
Sorry this isn't pertaining specifically to a new feature of the new build, I just discovered it and thought it was a really cool un-documented feature. I can't wait for the final release! Spotlight is SOOO fast, like, it finds 10,000 pictures across 2 internal hard drive's and an external in like practically 3 seconds! and Quicklook is the most amazing and useful thing ever... ever...
It also seems like more things have the "hold shift for slow-mo eyecandy" in Leopard due to Core-Animation... lots of widgets can be slow-moe'd (Calendar, Weather), spaces, stacks, pretty much everything... the other day my computer bugged out on me while in Spaces and all my windows were super small, and clicking wouldn't quit spaces, but I could still manipulate my windows and type in tiny little boxes and stuff, it was sweet =P
Ok, sorry for rambling, it's just that using Leopard has made me so excited to be able to dump Tiger and buy and exclusively use a bug-free Leopard in October (or at least relatively bug-free... more so than it is now at least!)
