NBC has announced their season finale schedule:
30 Rock: Thursday, May 20 @ 9:30 pm/ET
The Biggest Loser: Tuesday, May 25 @ 8 pm/ET (two hours)
The Celebrity Apprentice: Sunday, May 23 @ 9 pm/ET (two hours)
Chuck: Monday, May 24 @ 8 pm/ET (two hours)
Community: Thursday, May 20 @ 8 pm/ET
Law & Order: Monday, May 24 @ 10 pm/ET
Law & Order: SVU: Wednesday, May 19 @ 10 pm/ET
The Marriage Ref: Thursday, May 20 @ 10 pm/ET
Mercy: Wednesday, May 12 @ 8 pm/ET
The Office: Thursday, May 20 @ 9 pm/ET
Parenthood: Tuesday, May 25 @ 10 pm/ET
Parks and Recreation: Thursday, May 20 @ 8:30 pm/ET
Trauma: Monday, May 10 @ 9 pm/ET
Credit: EW.com