Harry Groener, a three-time Tony Award nominee for his work in Crazy for You, Oklahoma! and Cats, will guest star on NBC's new comedy, "Watching Ellie," April 2.

Groener will star as a dance instructor in an episode entitled "Tango" that will air at 8:30 PM on NBC stations across the country. The new situation comedy featuring former Seinfeld star Julia Louis-Dreyfus concerns an L.A. based jazz singer named Eleanor ("Ellie") Riggs. In this episode Ellie and her beau Ben (Darren Boyd) try to avoid her ex boyfriend Edgar (Steve Carell) by ducking into a dance studio where Groener's character works.

In addition to his three Tony-nominated roles, Harry Groener has also been seen on Broadway in Harrigan and Hart, Oh Brother!, Is There Life After High School?, Sleight of Hand and in the title role of Stephen Sondheim's Sunday in the Park with George. Groener also portrayed the hapless Ralph in NBC's "Dear John," and his other TV appearances include "Mad About You," "Murphy Brown," "Just Shoot Me," "Home Improvement," "Quantum Leap," "Cupid," "Buddy Faro," "Star Trek: The Next Generation," "Star Trek: Voyager" and the recurring role of The Mayor on "Buffy the Vampire Slayer." Groener's film credits number "Amistad," "Patch Adams," "Dance With Me" and "Buddy Boy."

A second episode of "Watching Ellie" will also air April 2 at 9:30 PM, following "Frasier." Written and created by executive producer Brad Hall (NBC's "Saturday Night Live," "Brooklyn Bridge"), "Watching Ellie" is a 22-minute snapshot in the life of Ellie, presented in real time.

—By Andrew Gans