Since I started this fantabulous thread, I might as well post my experience at the interview yesterday.
Basically, the interview was a breeze -- the interviewer was very nice and professional. She asked all the usual questions (where you met, when's his birthday, where he works, etc) to my wife. She didn't ask a darn thing from me, except if I had gotten into any trouble, and the answer was obviously no. Anyway, after she kept proof of my wife and I being together (pictures, joint bank statement, joint mortgage approval [Yes, we're buying a new house!], etc), she said that my name hadn't cleared the FBI check (!!), so the best she could do is to stamp a "Pending" on my passport.
So yeah, that was kind of a little disappointing as I was hoping to get the approval stamp show up on my passport in one shot. I guess I gotta wait for the name check to clear! (Anyone has any idea how long that takes on an average?). You would think that being in the country for so long with 3 H1-B extensions under my belt, they would've cleared the name check by now, but I guess not. Anyway, the whole interview took 7 minute tops. So while I'm glad I got past the interview process rather nicely, I'm at the mercy of the name clearance process.