Knight moves: out Broadway hunk Christopher Sieber is enjoying his biggest hit yet.

Christopher Sieber has been in hit musicals like Thoroughly Modern Millie and Beauty and the Beast (where he had a blast playing the manly Gaston and met his partner of five years, actor Kevin Burrows). He's also had the joy of a nightly showstopper, like his hilarious number "Agony" in the critically acclaimed revival of Into the Woods. He even sang the occasional tune in his role as one of TV's first gay dads on ABC's sitcom It's All Relative.

But nothing compares to the head-spinning (and limb-chopping) experience of being in the megasmash Monty Python's Spamalot, which is packing them in with the lure of Python routines and a top-notch cast that also includes Tim Curry, David Hyde Pierce, Hank Azaria, and rising star Sara Ramirez. Sieber talked with The Advocate about what it's like to go from being an "ugly kid with no neck" to playing a dashing knight in the biggest hit in town.

Let's cat to the chase. Can you get me tickets?

[Laughs] This is my sweet revenge. Growing up in the Midwest as a gay kid, you're picked on. This girl was in my seventh-grade French class, and she would poke her pencils in the back of my neck and then put her lipstick in my hair, and then she'd spray me with perfume. Last weekend, who do I hear from but Amy from the seventh grade. And she asked for tickets. I e-mailed her back, "Amy, there is no possible way I would get you tickets after the way you treated me." She hasn't responded yet.

You really work your butt off in the show.

My partner, Kevin, goes online and people write, "Christopher is wasted in this show because he's in the first act and then you don't see him until the finale." They don't read the Playbill! I play Sir Galahad. And in the second act I play the Black Knight, who has all his limbs chopped off. It's the most uncomfortable costume because of the special effects. For the first couple of weeks, I had bruises all over my body. But anything for a laugh. And then I play Prince Herbert's father. He doesn't really have a name; I'll call him Josh. He's a big, disgusting man, so that's about 45 pounds of costume.

Everyone mentions your Andrew Lloyd Webber parody duet, "The Song That Goes Like This," with Sara Ramirez.

It's very rare that you get to work with someone and see them become one of the biggest stars on Broadway. Sara's on the verge of becoming something bigger than she can imagine.

You've been in acclaimed musicals and performed great numbers that brought down the house, is Spamalot really different?

The day after we opened, coming to work and seeing the line go down the block--I've never been in a hit like this. People talk about the roar of the crowd, and I thought I knew what they meant, but I'd never heard it. At the curtain call, they're simply roaring. It's like a rock concert.

Giltz is a regular contributor to several periodicals, including the New York Post.