best vocal harmonies in rock


What r'n'r artists (or records) feature great vocal harmonies? To keep the list more manageable, let's stay with the post doo-wop period. Brian Wilson/Beach Boys, Todd Rundgren/Utopia and Lindsey Buckingham/Fleetwood Mac -among others- all qualify in my book. Who do you like?

Marty
martykl

Since most of the responses seem to be so focused on acoustic music, I'll throw out something more recent:

Nickel Creek

At least in this decade, they were unsurpassed when it came to vocal harmonies...
I bow to the person who mentioned the Bee Gees. VERY unfair that it took us over 30 posts.