Saturday Night Live (abbreviated as SNL) is an American late-night live television sketch comedy and variety show created by Lorne Michaels and developed by Dick Ebersol. The show premiered on NBC on October 11, 1975, under the original title NBC's Saturday Night. The show's comedy sketches, which parody contemporary culture and politics, are performed by a large and varying cast of repertory and newer cast members. Each episode is hosted by a celebrity guest (who usually delivers an opening monologue and performs in sketches with the cast) and features performances by a musical guest. An episode normally begins with a cold open sketch that ends with someone breaking character and proclaiming, "Live from New York, it's Saturday Night!", properly beginning the show. 

In 1980, Michaels left the series to explore other opportunities. He was replaced by Jean Doumanian, who was replaced by Ebersol after a season of bad reviews. Ebersol ran the show until 1985, when Michaels returned; Michaels has remained since then. Many of "SNL"s cast found national stardom while appearing on the show, and achieved success in film and television, both in front of and behind the camera. Others associated with the show, such as writers, have gone on to successful careers creating, writing, or starring in TV and film.
Has the shown been good for it’s cast and writers?
When did Michaels leave?
Who replaced him?
When did the show premier?
Where is the show made?
Does it have an abbreviation?
what is that?
standing for?
Who got bad reviews?
how does the show end?
Who hosts the episodes?
how many seasons was Jean there?
Did Micheals ever return?
when?
What was the original title?
who created it?
why did michaels originally leave?
and who developed it?
is this a day-time show?
then what is it?
Yes
Many of "SNL"s cast found national stardom while appearing on the show, and achieved success in film and television, both in front of and behind the camera.
in 1980
n 1980, Michaels left the series
Jean Doumanian
He was replaced by Jean Doumanian
October 11, 1975
The show premiered on NBC on October 11, 1975
New York
Live from New York, it's Saturday Nigh
Yes
Saturday Night Live (abbreviated as SNL) 
SNL
Saturday Night Live (abbreviated as SNL
Saturday Night Live
Saturday Night Live (abbreviated as SNL
Jean Doumanian,
Jean Doumanian, who was replaced by Ebersol after a season of bad reviews
unknown
unknown
a celebrity guest
Each episode is hosted by a celebrity guest 
One
Jean Doumanian, who was replaced by Ebersol after a season
Yes
1985, when Michaels returned
1985
1985, when Michaels returned; 
NBC's Saturday Night
original title NBC's Saturday Night
Lorne Michaels
Saturday Night Live (abbreviated as SNL) is an American late-night live television sketch comedy and variety show created by Lorne Michaels
to explore other opportunities
In 1980, Michaels left the series to explore other opportunities
Dick Ebersol
Saturday Night Live (abbreviated as SNL) is an American late-night live television sketch comedy and variety show created by Lorne Michaels and developed by Dick Ebersol
No
Saturday Night Live
a late-night television show
Saturday Night Live (abbreviated as SNL) is an American late-night live television