Rhyme Asylum (one of my favorite UK rap groups) only ever made two albums ("Solitary Confinement" & "State of Lunacy") but I'll keep listening to them because they were dope, sure they never made any other albums but what they put out are classic.

Fake Sound of Progress was the ~only~ good album Lost Prophets made, and if they would have just stopped there instead of making mainstream Emo junk, that would have been totally fine.