John Mahoney

Charles John Mahoney was an English-American actor of stage, film, and television. Born in Blackpool, England, Mahoney emigrated to the United States at the age of 18 and started his acting career on the stage in 1977, moving into film in 1980. He was best known for playing the blue-collar patriarch Martin Crane in the American sitcom Frasier, which aired on NBC from 1993 to 2004.

Cheers · S11, E5

Do Not Fosake Me, 'O, My Postman

A pregnant Maggie returns and suddenly insists that Cliff is her baby's father. Meanwhile, mercurial ex-convict Andy pops up at the bar, looking for the long-departed Diane Chambers.
Burn Notice · S2, E16

Lesser Evil

After capturing Victor, Michael gets to know his motivation and his connection to Carla. When the truth about Carla's organisation is revealed, everyone is put in danger.
Burn Notice · S3, E16

Devil You Know

Michael is approached by his alter ego - the man who actually committed the crimes that were used to burn him.