I think that Tess mercer is so much better playing the villian then Lex in smallville you can really beleive that she can be so evil.
When Lex was in smallvlle it felt that it was forced even in series 7 when he became really bad.
What i want to know is what happen between the time she was on the island with Oliver Queen and now because something has changed.
When she was on that island she seemed not bad at all.
Hopefully they will explain that to us.
So what do you think you think LEx or Tess?