We know there's some big income-tax thing happening this week, too, but we're having trouble focusing on anything other than the return of Fox's Golden Globe-winning musical series; after all, we've been waiting more than four months for a new episode. Since we love talking about the show—and we suspect a few of you do as well—we thought we'd gather up a few Broadway Gleeks and find out just why they consider themselves fans. But first, we thought we'd try to squeeze a little bit of information out of Glee's newest guest stars, Jonathan Groff and Idina Menzel. The Spring Awakening star and Wicked Tony winner — and avid Glee viewers—pop up in Vocal Adrenaline (he as a singer, she as director), the glee club that made everyone's jaws drop in episode 1 with its fierce rendition of Amy Winehouse's "Rehab."

Groff had worked with Glee co-creator/exec producer Ryan Murphy on an F/X pilot ("Pretty/Handsome") that never got picked up. When Ryan began working on "Glee," Groff reveals, "He said that if the show continued, he would create something for me." And, naturally, when the call came, he "jumped at the opportunity" to join the cast. Groff plays Jesse St. James—a marquee-made name if there ever was one—the lead singer of Vocal Adrenaline, the rivals to the talented, lovable misfits of McKinley High's New Directions. He's "super confident, super ambitious, and super talented." Think of him as the equivalent of Lea Michele's Rachel Berry. Conveniently, Jesse and Rachel meet, and "sparks immediately fly. She's never met a peer that wants to be famous just as much as she does!" Not surprisingly, he can't tell us much about his musical numbers—there's a sort of omertà around specific titles—but "I can tell you that pretty much every single song that I sing is something that I never would have dreamed of singing!" (Okay, Groff can't reveal details, but that doesn't mean that Michael Ausiello can't. Listen for him on Lionel Richie's "Hello" and—as future "Glee" guest star Neil Patrick Harris' "How I Met Your Mother" character would say, wait for it—AC/DC's "Highway to Hell": http://ausiellofiles.ew.com/2010/03/14/glee-spoiler-alert-major-scoop/.) Working with his Spring Awakening co-star Michele has been "illegal fun," Groff says. "That's the only way to describe it. We're so comfortable with each other that I think we really challenge each other to do our best. And I get to sing and dance on TV with my best friend!" SA fans rejoice: Groff says we'll "definitely" be seeing him throughout all of the nine returning eps.