On the pioneering late-night
sketch comedy program
Saturday Night Live (originally called ''NBC's Saturday Night''), creator and executive producer
Lorne Michaels hired him as a writer. O'Donoghue appeared in the first show's opening sketch as an English-language teacher, instructing
John Belushi to repeat the phrases, "I would like to feed your fingertips to the wolverines", "We are out of badgers. Would you accept a wolverine in its place?" and "'Hey!' Ned exclaimed. 'Let's boil the wolverines.'" before suddenly dropping dead of a heart attack. He later made appearances in the persona of a
Vegas-style "impressionist" who would pay great praise to showbiz mainstays such as
talk show host
Mike Douglas and singers
Tony Orlando and Dawn—and then speculate how they would react if steel needles with real sharp points were plunged into their eyes. The shrieking fits that followed are believed to be inspired by O'Donoghue's real-life agonies from chronic
migraine headaches. O'Donoghue, in reference to his refusal to write for
Jim Henson's
Land of Gorch sketches which appeared in the early years of SNL, quipped, "I won't write for felt." Later, O'Donoghue cultivated the persona of the grim "Mr. Mike", a coldly decadent figure who favored viewers with comically dark "Least-Loved Bedtime Stories" such as "The Little Engine that Died". One of his most notable
SNL sketches is the
Star Trek spoof "
The Last Voyage of the Starship Enterprise" that was a tour-de-force for Belushi. In 1979, he produced a television special for NBC, featuring most of the
SNL cast, called ''
Mr. Mike's Mondo Video.'' Because of its raunchy content, the network rejected the program, which was then released as a theatrical film. O'Donoghue returned to
SNL in 1981 when new executive producer
Dick Ebersol needed an old hand to help revive the faltering series. O'Donoghue's volatile personality and mood swings made this difficult: his first day on the show he screamed at all the cast members, forcing everyone to write on the walls with magic markers.
Catherine O'Hara was rumored to have quit
SNL after a week and before appearing on-air due to O'Donoghue's volatility. O'Hara denied this account, saying she didn't feel comfortable in New York City and left to return to
Second City Television. The only cast member O'Donoghue liked was
Eddie Murphy, reportedly because Murphy was not afraid of him. According to the book
Live from New York, O'Donoghue tried to shake things up on that first day by saying "this is what the show lacks" and spray-painting the word "DANGER" on the wall of his office. O'Donoghue was released from the show after writing the never-aired sketch "The Last Days in Silverman's Bunker", which compared NBC network president
Fred Silverman's problems at the network to
Adolf Hitler's final days. It was planned that John Belushi would return to play Silverman, and a great deal of work had been done on creating sets for the sketch (which would have run for about twenty minutes), including the construction of a large
Nazi eagle clutching an NBC corporate logo instead of a
swastika. Another unaired O'Donoghue sketch from around the same period, "The Good Excuse", also involved Nazi jokes. In the sketch, a captured German officer berated by his captors for Nazi war crimes explains that he had a good excuse, which he whispers into their ears, inaudible to the viewers. His captors are quickly persuaded that the unheard excuse was, in fact, an acceptable reason for the crimes of the Third Reich. On October 26, 1986, O'Donoghue was further connected to
SNL by virtue of his marriage to the show's musical director, Cheryl Hardwick. The union was fodder for a "Weekend Update" joke in which
Dennis Miller noted that the couple was registered at
Black+Decker. O'Donoghue was one of several original writers rehired by Lorne Michaels upon his return to produce the show in 1985. O'Donoghue's intention was to write and direct short films for the show; however, none were completed and he wrote little else, apart from a monologue seemingly designed to humiliate
Chevy Chase when he hosted the second show of the season. (The monologue began, "Right after I stopped doing cocaine, I turned into a giant garden slug, and, for the life of me, I don't know why.") The monologue never aired, and O'Donoghue was fired a month later after telling
The New York Times that
SNL had become "an embarrassment. It's like watching old men die." His final contribution to the show was a song, "Boulevard of Broken Balls", co-written with his wife Hardwick and performed by Christopher Walken on the October 24, 1992 episode. ==Other work==