I haven't even gotten to Mystery Spot yet! And I mean, there's still a ghost ship, Real Housewitches, African dream root, the Edison ghost phone, and all kinds of weird shit standing between Sam and incredible bereavement trauma, demon blood, the Apocalypse, etc.
It definitely puts Sam's immortal organ-harvesting plans into perspective (3x15 "Time is On My Side"), and man, I gotta say, that remains the weirdest plan Sam's ever had. Like, ever. Forget panic and desperation--stuff like this is really just born of long-term cognitive dissonance and "I can't believe I took time off from Dean's deal to help him work a case with the Ghostfacers." Poor guy!