Bands with great second albums

Blondie - Plastic Letters
Violent Femmes - Hallowed Ground
The Mothers - Absolutely Free
Husker Du Everything - Falls Apart
Cocteau Twins - Head Over Heels
Pixies - Doolittle
The Stooges - Funhouse
Hole Live - Through This
Nick Cave & the Bad Seeds - The Firstborn is Dead

and my fave second album ever:

The Birthday Party - Prayers on Fire

Grace Potter
Shelby Lynne

Beth Orton - Central Reservation

Cake

... SANTANA ...