NBC has set the season finale dates for its 2010-11 season, with a one-hour season finale for "The Office" scheduled on May 19, reports TVLine.com.

The network also noted that "30 Rock" will celebrate its 100th episode on April 21 with a one-hour program at 10 p.m. The season finale of the program will air on May 5. NBC offered the following blurb as a tease for the episode: “A new corporate boss, a star in hiding, and a mind-altering gas leak may doom ‘TGS,’ America’s fourth-favorite Friday night sketch comedy show.”

"Parks and Recreation" will also end its season with a one-hour finale, scheduled to air at 10 p.m. May 19, after "The Office."