I think for most people, it's the album that comes out just after you really get into the band. I got into the band after 'Nude with Boots' came out, so I was very excited for 'bride screamed murder' and 'bulls and the bees'. Lucky for me, those albums both rule. I still get pretty excited for any Melvins material. It helps that most of their albums have a "purpose" in that, each album doing something interesting and new.