In the finale, Sam breaks the last of the 66 seals, by slaying a demon in St.Mary's church, which was built on top of the pit Lucifer was cast into. It was the spilling of Lilith's blood that opened the gateway to allow Lucifer to rise. Sam has changed into a demon himself, by drinking his girlfriends demon blood, while Dean has pledge full alliance to the Angels.
It's fitting that we find both the male Linga-Sam and female yoni-Dean of the stargate to come together to open a portal to hell in Supernatural. Season 5 should be interesting.
Left: Crystal Shiva Lingam on Yoni
Right: Linga and Yoni
Ivan Raimi also has Evil Dead IV coming in 2010 or 2011 !
Ever notice how many 'Sam' s travel to the other side along with Alice, Dorthy, Olivia, Anna and their variant names ??
"Sir Walter Scott in his Letters on Demonology and Witchcraft ascribed gnomes, kobolds and goblins, along with Scottish bogles, to all correspond with a caricature of the Sami people."
The ReapeR TV series 'Sam' Oliver
Olivia in Fringe .....
Stargate SGI: Samantha
Samantha in S.Darko - Donny Darko 2
Sam From the 'Transformers' Movie w/ with a 'Hellraiser' Cube
'Hellraiser' Cube door to Hell...