Same here! I doubt it will take long for me to decide to put it on my iMac and damn the consequences. And the closer we get to Friday the more I'm thinking I should just do that, and leave the old stuff on the laptop just in case. Hmmm...
I'm really unexcited by 1'.5. It seems to me that a lot of the new features aren't needed, don't go far enough, or I've already found a way to do them with what I've got now. I think that I'm going to wait until I find that I need something that it's offering or some new app release that I can't live without requires it.
Some of the new features may be more interesting than a few screenshots and a short description on Apple's website make them seem. Spaces for instance, I can't figure out exactly what it does and why I would need it. It may be one of those things that I didn't know that I couldn't live without.
I have no interest in Spaces either, but that's not enough to keep me from upgrading. 64 bit support, a reported huge speed increase, Time Machine, the new Finder, and a more consistent look throughout the OS is what has me hooked. Plus, just having come from the Windows side of life, the ability to get 5 copies for $2''.'' USD is a huge bonus!
I've briefly tried out the demos of Pathfinder and Forklift. I figured that I would wait and see how things played out with 1'.5 before I drop any more money on that sort of thing. I've also gotten into the copy and move functions of Bridge for shuffling files around.
For those of us coming from the X Window System world, Spaces is nothing new -- but it is extremely useful!
(I worked at MIT Project Athena 2'+ years ago, the project that developed X, and wrote much of the original X Video Toolkit.)
It's probably one of those things that you can't see a need for until you have it in front of you. But it's probably also one of those things that you'll never want to give up once you've gotten used to having it...