Jeffrey Dean Morgan Returning to Supernatural

Jeffrey Dean Morgan will reprise his role as John Winchester on Supernatural's 300th episode. Morgan last appeared on the show in season 3, in a voice-only role as a voice-shifting monster. His last appearance as John-proper was in the season 2 finale (although he was technically a ghost). His return appearance will be titled "Lebanon" and air on February 7.

I'm ~90% sure this image is from season one