John Mahoney and Marsha Mason in Frasier (1993)

Kelsey Grammer and John Mahoney in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, and Peri Gilpin in Frasier (1993)

John Mahoney and Jane Leeves in Frasier (1993)

Kelsey Grammer, John Mahoney, and Trevor Einhorn in Frasier (1993)

David Hyde Pierce and John Mahoney in Frasier (1993)

Kelsey Grammer, John Mahoney, and Wendie Malick in Frasier (1993)

David Hyde Pierce, John Mahoney, and Jane Leeves in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, and John Mahoney in Frasier (1993)

John Mahoney and Eva Marie Saint in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, Peri Gilpin, and Jane Leeves in Frasier (1993)

Harrison Ford and John Mahoney in Frantic (1988)

John Mahoney and Betty White in Hot in Cleveland (2010)

John Mahoney, Georgia Engel, and Betty White in Hot in Cleveland (2010)

John Mahoney and David Ogden Stiers in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, Barbara Babcock, and John Michael Higgins in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, and Jane Leeves in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, Teri Polo, Jane Leeves, and Saul Rubinek in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, Peri Gilpin, Jane Leeves, Dan Butler, and Moose in Frasier (1993)

Kelsey Grammer, David Hyde Pierce, John Mahoney, Peri Gilpin, Jane Leeves, and Moose in Frasier (1993)

Kathy Baker, John Mahoney, Ron Eldard, and Bradley Whitford in Fathers and Sons (2005)