Bands with great second albums

Al,
I went on to Amazon to check out the Projections disc. I liked it and ordered it. If you aren't already familiar with it, may I suggest Seatrain. I prefer the self-titled disc to Marblehead Messenger. Andy Kulberg was a member of that band as well. Really great songs.

War "All Day Music"
War "The World Is A Ghetto"

Blood, Sweat and Tears II
Yes  "Fragile"

Metallica's Ride The Lighting Is a big advance over Kill 'Em All!