After upgrading to OS X Lion, I released that the Library folder in my user’s home folder (where all the .plist files from the installed apps are stored) was gone. I wish Lion would have respected my folders and installed apps from my Snow Leopard installation during setup (it also removes iSync). Not big deal unless you use some kind of old-school Nokia cell phone). As there is no option to show hidden folders in OS X (or I haven’t found it), the only way to bring back the Library folder is via terminal. Open the Terminal.app (found under Utilities folder or search it with Spotlight) and paste the following command. Yes, you are done!
chflags nohidden ~/Library/