Dean and Lisa's house looks familiar. I thought maybe it was the same house from 2.20. They aren't the same house but the Winchester house in 2.20 looks pretty close. Dean and Lisa's house from 6.01 is first below. I have to keep looking for Dean's white truck to tell which is which.
The other cool comparisons are Sam and Dean in 5.18 in the panic room after Dean's go 'round with Cas and Dean waking up to see Sam after he's rescued Dean from the djinn. Episode 5.18 caps are on top.
The other thing I noticed is that there is a puzzle on a shelf at Dean and Lisa's of a leopard. It just made me think of the quote about a leopard cannot change it's spots. Looks like it comes from the Bible and the whole quote is interesting in light of good and evil as far as SPN goes.
There's also a box of checkers. Everybody on this show has a checkered past. I can't make out the middle box.
On the whole, I liked the episode and wonder what will happen next. What will Samuel and crew do with the djinn? Maybe they'll put her in a bottle or a lamp. Goodness knows, their hideout could use someone to do some housekeeping.
Edited April 14, 2012.