Bands That Peaked With Their First Commercial Album

[Fenster]

Bradley Nowell (lead singer of Sublime) died before their self-titled album was released. Though Second Hand Smoke and an acoustic album were released after this fact.

IMO, Weezer's Pinkerton is their best album. So they didn't start sliding until the Green Album.

As far as bands that started sucking hard after their first album - Limp Bizkit and Creed come to mind.