Well, now that I've got my opaque menubar back, yeah I'm reasonably happy.
I threw away the dock, and really wish that stacks had more useful options (hierarchical folders, anyone?), etc etc, but it's a solid upgrade.
Under the hood, now... that is just beautiful. I just moved my development environment from the Solaris box at the office, Not a peep! No changes! I just run the compilation on whatever machine I want.
A really nice update, with a couple of niggles thrown in -- which will be ironed out over shortish time.
I like Leopard.