5 "exciting" new features in 10.8:
Better iCloud integration - meh
Notification Center like iOS - meh
Gatekeeper (control whether you can install all apps, just the Mac App store apps, or Mac App store + "identified" developers) - meh
Unification with iOS (iCal -> Calender, iChat -> Messages, Notes) - meh
Game Center - meh
So far, 10.8 = "meh" for me. Same as 10.7. I don't want iOS on my PC, Apple. It's a shame it's so hard to find decent well built Windows laptops.