There were a couple of problems I had with this episode, but nothing no one hasnt already stated. Overall, it was 7 for me. I go the feeling Welling was trying way too hard both as a director and an actor in this episode. The beginning was plagued by far too many revolving shots, bad acting (particularly by the foster mother and her incredibly idiotic death) and an abundance of glass. We get it Tom, the girl can break glass.
And while the high point of this episode was Rosenbaum's Lex (when isnt he the highlight though?), the kiss at the end baffled the crap out of me. That was one of more unrealisitc personal moments of the show. Lex just goes to her and kisses her, he trys to play it off (even though he did the exact same thing...what... five episodes ago?) and then she kisses him and runs off. The build up was just awful.