Apparently, there's an
ABC special Monday night at 8 p.m. exploring the theory that Mary Magdalene was actually Jesus's wife and that they had a child. Supposedly, Leonardo Da Vinci knew about this and left clues in his art.
This sounds like a crackpot theory, as someone quoted in the article put it, but I'm going to try to watch the show. It's on at the same time as 7th Heaven, so I'll have to tape one and watch the other.
More information: The theory apparently is that Da Vinci (along with several other prominent historical figures) was a descendant of Jesus and Mary and thus knew about it.