Bands with great second albums


Bands that had a great second album. We all know the obvious ones Led Zeppelin, Hendrix, The Beatles. What are your votes for great second albums. Some of mine are:
Neil Young - Everybody Knows This Is Nowhere
Elvis Costello - This Years Model
Allman Brothers Band - 'Idlewild South'
Badfinger - No Dice
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Tough to put out a better second album than Radiohead's "The Bends".  Perhaps Nirvana's "Nevermind" is the right there with it.  In the jazz world I often prefer a bandleader's second album such as Ornette Coleman's "Change of the Century".  You can see these guys' confidence building after a successful debut is under their belt and they real start pushing it, in a good way.
I may be wrong, but isn't Steely Dan's second LP COUNTDOWN....?
Many great choices here. Strange Days (already said) was the first that came to my mind. How about counting the Buckingham/Nicks era of Fleetwood Mac as a new one, and submitting Rumors, which came after their S/T LP.. (-: