Supernatural fans, what is your fave Season 3 episode?

From Season 3 only, as i'll be posting a separate Q for Season 4. I have already posted Qs for Seasons 1 & 2. I want to know what you like about the ep or eps (feel free to add more if you can't choose just one) that you choose, your fave part & of course, your fave Dean & Sam one-liners from the ep, if you can remember them. Also, feel free to add anything else you wish. I like long, pionate answers, proving you are a dedicated fan, it will help win you Best Answer. Btw, mine are Bad Day At Black Rock, Mystery Spot, Ghostfacers & A Very Supernatural Christmas, as they are by far the funniest of Season 3!! My fave one-liners are "I'm Batman. I'm amazing!" "I lost my shoe" & "You fudgin touch me again and i'll fudgin kill you!" They're the BEST!!! Thanks, Lisa Michelle x x lol x x