SPOILERS
Very good episode. In fact, one of the best of the season. The memory loss really made sense this time around. And they did not take anything away from Chloe! That alone made it worthwhile. Not only was Chloe particularly hot this episode, but I really felt for her. It's wrong that Clark pines for a chick that is unworthy of him.
The Jason scene completely rocked.
Lex is a manipulative SOB. I am glad Clark caught onto it, although wish it had been a bit sooner.
The freak of the week turned out to be a very sympathetic character for a change. I liked his character and would not mind seeing him turn up again.
In any event, I loved this episode and am really looking forward to seeing what happens at the end of this season. I am confused that Clark has not caught on to Chloe yet. I know that he knows, but he does not want to admit it. I wonder why he cannot trust Chloe. When he was not hampered by his past, he trusted her completely. Weird.