“Ground Floor” (10 p.m., TBS): The new sitcom “Ground Floor” follows what

“Ground Floor” (10 p.m., TBS): The new sitcom “Ground Floor” follows what happens when a hotshot banker (Skylar Astin), who thought he was having just a one-night stand with a partygoer (Briga Heelan), discovers that she works in the bank’s maintenance department. Oops.

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