I've been running OS X Lion for about 24 hours now. I knew what to expect before installing it thanks to months of coverage, but that was no substitute for actually diving through Lion's features firsthand. After a day of getting used to new features like Mission Control, fullscreen apps, Resume, and various other tweaks to my Mac's OS, I've grown to enjoy Lion far more than any version of OS X before it.
That's not to say it's been 100 percent smooth sailing. I turned the iOS-inspired, systemwide autocorrect off immediately after the first boot up into Lion, because a feature that's a godsend on a touchscreen would drive me (and most competent typists) absolutely insane on a "real" keyboard.
I disabled the inversed,