There are only a handful of successful bands that release one album then disappear into the night never to be heard from again. Almost always these bands are collaborations between already known artists, and this is the case with both of these artists. Sometimes it's better to quit while you're ahead rather than turn into something people hate. Y'know what they say
I'm sure in the future I'll cover more bands that only did one album, hell, I kind of have to because of The Sex Pistols.
Them Crooked Vultures formed back in 2009 as a group based around some heavy sounds from heavy hitters. Josh Homme of Kyuss and Queens of the Stone Age, Dave Grohl of Foo Fighters and Nirvana, and John Paul Jones of Led Zeppelin. Of the three artists the band definitely feels most like Queens of the Stone Age, in my opinion. They really don't feel like any of them individually. The bands sound varies a lot but the consistent thing is heavy drums and screaming guitar on most tracks.
Although they released the album back in 2010, and said that they were getting back into the studio soon in 2011, nothing else has surfaced. In 2015 their twitter account sent out the first tweet since 2010, so there is hope!
On a VERY different side of the coin, The Postal Service released their album, Give Up, back in 2003. The band is a collaboration between Ben Gibbard of Death Cab for Cutie, and Jimmy Tamborello of Dntel. They did reunite in 2013 for the 10 year anniversary of the album release, however right after that they stated the reunion was the final time the band would play together. No hope of a followup album.
In a strange twist of fate, due to a C&D dispute with the United States Postal Service the band's album actually ended up being sold by the USPS! Could you imagine picking up stamps and an indie electronic pop album at the same time? Weird.
Apple actually worked with the original creators of this music video to shot for shot copy the movie to make an apple commercial without having to pay The Postal Service for the usage of the video or their song. Nothing actually occurred but Gibbard was quite cross.
O yeah, and Funny or Die made a video with The Postal Service for 2013's reunion, it features quite a large number of famous musicians.