I personally disagree on Jefferson Airplane and Pulp, though recognize I may be in the minority on those (We Love Life and Crown Of Creation would probably be my picks).
Does Pet Sounds work? Obviously they have a lot of well-loved albums, but I suspect most fans would still say it's the best (barring archival releases of Smile, which to my mind don't really count).
Stereolab's Emperor Tomato Ketchup seems like another one that's the pretty clear consensus favorite despite coming from a band with a fairly large discography. Although I'm sure there are those who prefer their earlier punkier stuff.