'Will & Grace' turns 20: The cast through the years (69 images)

Mullally (R) and husband Nick Offerman arrive for the UNICEF Ball in Beverly Hills, Calif. on December 8, 2011. Offerman plays Ron Swanson on "Parks and Recreation" and has guest starred on "Will and Grace" twice -- once as a plumber and once as a celebrity chef. File Photo by Jim Ruymen/UPI

Messing arrives at the 69th annual Golden Globe Awards in Beverly Hills, Calif., on January 15, 2012. File Photo by Jim Ruymen/UPI

From left to right, Hayes (Larry), Chris Diamantopoulos (Moe), and Will Sasso (Curly), cast members in "The Three Stooges," attend the premiere of the film in Los Angeles on April 7, 2012. File Photo by Jim Ruymen/UPI

McCormack (L) and Jennifer Morrison arrive for the Tribeca Film Festival premiere of "Knife Fight" in New York City on April 25, 2012. McCormack plays Larry Becker in the film. File Photo by Laura Cavanaugh/UPI