David Kohan Creator, Executive Producer Max Mutchnick Creator, Executive Producer Eric McCormack Will Truman Actor Debra Messing Grace Adler Actor Sean Hayes Jack McFarland Actor Megan Mullally Karen Walker Actor Shelley Morrison Rosario Salazar Actor Harry Connick Jr. Leo Markus Guest Star Millicent Martin Leni Guest Star James Burrows Executive Producer, Director Alex Herschlag Executive Producer David Flebotte Executive Producer Tracy Poust Writer, Executive Producer Jon Kinnally Writer, Executive Producer Gary Janetti Executive Producer Tim Kaiser Executive Producer Greg Malins Executive Producer