Calling Occupants of Interplanetary Craft
Jonathan Coulton performed a cover of "Calling Occupants of Interplanetary Craft" during John Hodgman's Little Gray Books Lecture #29, "How to Communicate Without the Aid of Wires". To date, this is the only known time Jonathan has played it.
A blog post written by someone who attended this lecture calls this song a "highlight" of the evening, and describes the performance: "Saturday’s 'radio trick' consisted of passing out a dozen transistor radios to the audience, all tuned to a frequency broadcasting LGB musical director Jonathan Coulton as he played an acoustic rendition of the song from the stage. The effect was creepy, but it was also sublime."
"Calling Occupants of Interplanetary Craft" has not as of yet been officially recorded; however, a copy of the Little Gray Book Lecture performance is available here.