Chronology:She Thinks She's Edith Head

From This Might Be A Wiki
Song name Run time Releases Year Differences from other versions
(She Thinks She's) Edith Head 2:32

Long Tall Weekend 1999 Higher and "yellier" vocals with extreme stereo seperation on the instruments.
She Thinks She's Edith Head 2:37

Mink Car 2001 Deeper vocals and less stereo seperation. Apparently the same recording from LTW with the vocals retracked. Slightly longer as one can hear Flansburgh and Linnell talking as they leave the studio at the end.
(She Thinks She's) Edith Head (Demo) 1:54

Podcast 50 2012 The arrangement is similar to both released versions, but with reduced instrumentation. Vocals are closer to the LTW version.