NBC is taking on Fox’s Sunday animated comedy lineup with a multi-camera comedy block consisting of returning summer breakout The Carmichael Show and new Crowded (NBC)half-hour Crowded. The Carmichael Show will premiere with two back-to-back episodes on March 13, following the debut of the new kids variety series Little Big Shots hosted by Steve Harvey. Crowded will join the following Sunday, airing at 9:30 PM. NBC, which will air specials on Sunday between the end of football and the kickoff of the spring lineup, has not announced its plans for the 10 PM hour yet. It’s been a long time since NBC has aired comedies on Sunday in-season, though the network recently ran Welcome To Sweden on the night in summer.

Heartbreaker - Season PilotHeartbeat, originally slotted behind The Voice at 9 PM on Tuesday for the fall, had to be pushed because of star Melissa George’s pregnancy. The medical drama now has been assigned a less protected time period, Wednesdays 8 PM, where it will succeed The Mysteries Of Laura starting March 23. (Laura will complete its 16-episode sophomore run March 2.)

Heartbeat will get one airing in its originally earmarked berth, airing a preview on March 22 behind The Voice.

The Carmichael Show and Crowded also will get previews on Tuesday. Returning The Carmichael Show will air March 8 at 10:30 PM, following a preview of Little Big Shots, which in turn will follow The Voice. Newbie Crowded, which will need more sampling, will air back-to-back episodes on March 15, immediately following a two-hour Voice.

Dark drama Game Of Silence will succeed Shades Of Blue in the Thursday 10 PM slot, beginning April 7.