Answering the question no one dared to ask, "Why doesn't it work over email?"--it does!
Rupert Sheldrake--trying to further cement his reputation as the man most capable of balancing respectability with public prounciations of crazy stuff--apparently announced to the British Association for the Advancement of Science today that he has demonstrated the existence of "telephone telepathy". Now, I'm not sure I buy it, and it's certainly crazy, but it sounds pretty cool.
For published results, the best I can find is this 2005 paper from Perceptual & Motor Skills--"TESTING FOR TELEPATHY IN CONNECTION WITH E-MAILS"--republished in full here. I know nothing about the journal, and honestly don't have the slightest clue how to look up its impact factor (I suck, I know), so what you see is what you get.