Misha Collins' Stonehenge Apocalypse will be part of Syfy 2010-11 Saturday original movies lineup. No airdate has been given yet.
About the movie:
"When the giant stones of Stonehenge begin to move and cataclysms occur all over the earth, only a fringe radio talk show host who’s an expert in UFOlogy figures out that the ancient monument is really alien technology. Stars Hill Harper, Misha Collins and Peter Wingfield."
Source: TVbytheNumbers.com.