Just installed Lion on my Macbook Pro.
Must say it is overrated to say the least. Lots of fancy multi touch gestures, but simple things like allowing 32-bit software (like wireless broadband modems) is actually HARDER to do (despite promising they'll make it operate without having to stand on the 3 and 2 keys when starting up) on it.
Also, takes a hell of a lot longer to start up and close down.
I'm disappointed. I expected better.