S4 E1 - Lazarus Rising
Dean comes back from the dead!
The mysterious handprint!
Dean reunites with Bobby and Sam!
(It seems like) Sam's finally getting laid!
Mysterious guy in a trench coat!
Mysterious guy turns out to be Castiel, Angel of the Lord!
Dean and Castiel bring eye-fucking to a whole new level!
"I'm the one who gripped you tight and raised you from perdition."