Zep I - Babe I'm Gonna Leave You
Zep II - What Is and What Should Never Be
Zep III - Since I've Been Loving You
Zep IV - When the Levee Breaks
Houses of the Holy - Rain Song
Physical Graffiti - The Rover
Presence - Tea for One
In Through the Outdoor - In the Evening
Coda - Hey Hey What Can I Do
and my favorite songs off live albums:
Song Remains The Same - No Quarter
How The West Was Won - Over the Hills and Far Away
Like so many have said here, the fourth album is just really fantastic its hard to pick a favorite. But if I had to choose then Levee gets my vote. You know its special the first second you hear it!