NBC announced the dates of many of its season finales Tuesday, as well as a special hourlong 100th episode of "30 Rock."
The Emmy-hoarding series will feature a show-within-a-show as "TGS," also celebrating its 100th episode, faces the prospect of ending.
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Complicating things, according to NBC, are "a new corporate boss, a star in hiding, and a mind-altering gas leak [that] may doom America's fourth-favorite Friday night sketch comedy show."
The 100th episode will air Thursday, April 21, at 10 p.m.
NBC’s season finales for 2010-11:
MONDAY, APRIL 4
“Harry’s Law” (10-11 p.m.)
FRIDAY, APRIL 8
"Who Do You Think You Are?" (8-9 p.m.)
TUESDAY, APRIL 19
“Parenthood” (10-11 p.m.)
SUNDAY, MAY 1
“America’s Next Great Restaurant” (8-9 p.m.)
THURSDAY, MAY 5
“Perfect Couples” (8:30-9 p.m.)
“30 Rock” (10-10:30 p.m.)
THURSDAY, MAY 12
“Community” (hour-long episode from 8-9 p.m.)
“Outsourced” (10:30-11 p.m.)
MONDAY, MAY 16
“Chuck” (8-9 p.m.)
WEDNESDAY, MAY 18
“Law & Order: Special Victims Unit” (10-11 p.m.)
THURSDAY, MAY 19
“The Office” (one-hour finale from 9-10 p.m.)
“Parks and Recreation” (hour-long finale from 10-11 p.m.)
MAY 21
“Saturday Night Live” (11:30 p.m.-1 a.m.)
SUNDAY, MAY 22
“The Celebrity Apprentice” (9-11 p.m.)
MONDAY, MAY 23
“The Event” (9-10 p.m.)
TUESDAY, MAY 24
“The Biggest Loser” (9-11 p.m.)