Retrograde Petrification of a Human Being was introduced as a medical/affilication of a human being first in Doctor Who (new) series 2, New Earth, with the Duke of New (new)4th or so power - new york... being treated for it in the medical building, a treatment that was not available for at least another century or so... It was then used again in Series four, episode 2, the Fires of Pompeii. Where there priestess's in training suffered from the affliction.
It was interesting to see a condition introduced on one show to be given a bit more coverage on another show.
So I see this tieing in Eureka, with Doctor Who, with Warehouse 13 and Torchwood, etc...
So come on writers- do a bit more colleraberation and tie all these shows together to make them seem as all a bigger picture - one big story over arch of all the smaller episodic shows.