"soft serve" by soul coughing makes me dance.
and the first track on their first album (title unknown) that includes the line

"a mannnnn
drives a plaaaaannnnnne-nuh
into the
cry-sler buil-ding"

makes me hallucinate.

also i love anything sung by joe prater, but only if he's singing solo. i don't know what it is about this guy; he makes such beautiful music, and then sings with other folks who also make beautiful music, and somehow the whole is much less wonderful than the sum of its parts. go figure. but "willie o' winsbury" renders me catatonic.

june tabor's version of "no man's land"
robby mcconnell et al's version of "there were roses"
tom herring's "the green man"
anything that falls out susan welch's mouth

chopin's fantasie impromptu
beethoven's moonlight sonata
bach's air on a g string (i know; har har har)
any of rachmaninov's sacred choral stuff, mmmmmmmmm.