Kristin Veitch -- E!'s Watch with Kristen

Maybe I'm just in the Valentiney mood, or maybe Michael Rosenbaum was just that darn charismatic in our latest chat, but after talking to him I just can't get this George Michael-meets-Weird Gal Veitchovic song out of my head. It's called "I Want Your Lex."

Trust me, there is good reason to be Smallville-ainy giddy right now, 'cause Michael Rosenbaum (aka Smallville's Lex Luthor) directed an episode that airs tomorrow (Thursday) night on the CW.

In honor of this special event, Michael and I spent some time talking ‘bout divas on set, that big wedding right around the corner, his character's "darkest moment yet" and why Lex's days in Smallville are definitely numbered.

So, Mr. Big Pants Director, tell us, how did you like running the show for the first time?
It was amazing. Honestly, it was the biggest challenge of my life. It was a crash course in filmmaking. I’m not the most decisive person in the world, but it forces you to be that person. The prop people are coming up to you and asking, Do you want this gun or this gun? Wardrobe wants to know if you want this shirt or that shirt, and then you have actors [needing your guidance]. You have to know what you want. You have to know the story. You actually have to read the script this time!

Who was the biggest diva?
People always ask what the hardest part was and I say, "Directing myself because I’m very hard to work with." I like that little joke. No, everybody was great. I told myself that if I fail at this and if I don’t get good performances, I won’t do it again. But I was really happy with the way things turned out, and I honestly think it is a great episode with exciting twists in it.

Give us scoop on the ep.
The story in a nutshell is there is this kid who was blinded by the meteor shower a couple of years ago and he now has the ability to see other people who are meteor freaks or meteor infected. Lex Luthor hires this doctor to kick the kid around and find all the meteor freaks in Smallville, so Lex can do all these tests on them. Eventually, Clark, Chloe and Lana start to unravel what the hell is going on and we find out that one of them is… well, let’s just say somebody is found out. One of our beloved characters is involved in a big twist. I can’t give too much away, but it’s cool, really cool.

Of course, I have to ask you about the Lex and Lana relationship. She’s pregnant now, which is huge, and the wedding is coming up. Should we be happy for them?
I, personally, think Lana found the right man. I think Lex loves her more than anything. He’s getting as honest as he can be. Lots of people think Clark is the right guy, but look at Clark. I mean, Clark lied to her throughout their whole relationship. It was a sham. Why wasn’t he honest with her? He’s supposed to be this great guy, but he’s not such a great guy if he lies. Everyone looks at Lex like he’s the bad guy. Why is Lex so bad? If you ask me, Lex is trying to do the best he can. He is trying to protect her, just like Clark was, and I think if something happens and he loses Lana, there is no telling what Lex is capable of doing. But there is a big wedding scene coming up in a couple of episodes...