"We don't do angels on this show," Supernatural creator Eric Kripke recalls saying back in Season 3. Fast-forward two seasons and he now admits, "Looking back it was obvious."

Supernatural's Misha Collins wants to catch people off-guard with random acts of kindness

In this exclusive, behind-the-scenes clip from the Season 5 DVD, Kripke talks about the introduction of Misha Collins' character Castiel. Plus: He and writer Bob Singer discuss their original five-year plan for the show and how they chose to dramatize the apocalypse in Season 5.

SUPERNATURAL creator shares story progression

Supernatural creator Eric Kripke reveals how half of the show's mythology was created over the course of the show.|Supernatural|Eric Kripke|