Continuity mistake: The rooms Amanda and Billy fool around in are different between the scenes. Earlier they are at Amanda's apartment, with the bed across from a window. Later when she brings Billy breakfast the next morning, the bed is different and there's a wall where the window was previously.
Who's Afraid of Amanda Woodward?: Part 1 - S5-E32
Continuity mistake: As Chelsea is leaving her mom's hotel room through an adjoining doorway to her own room, she pulls the door closed behind her. She walks over to sit on her bed but the door she just closed is wide open, allowing her mom's suitor to walk through without touching the same door. (00:19:25)
Desperately Seeking Samantha - S6-E5
Continuity mistake: As Ernie the cook is exiting the restaurant kitchen with full plates of food in each hand, Samantha enthusiastically surprises him and he immediately hugs her, but his hands are now empty. (00:17:30)
The Light at the End of the Tumble - S6-E6
Continuity mistake: Jennifer brings Craig a plate of cookies, which he politely declines and continues to flip the pages of his magazine with his right hand. After Jennifer asks him what he plans to do with his new found fortune, a cookie has magically appeared in Craig's right hand. (00:13:25)
A Christine Runs Through It - S6-E22
Continuity mistake: Jennifer's hair is suddenly a shoulder-length bob halfway into the episode when it was long and curly from the start, and in the prior scenes.
Buona Sera, Mr. Campbell: Part 1 - S7-E6
Continuity mistake: When Amanda is tied up lying face down on the floor, the next moment cuts to her using broken glass to cut the ties to free herself and her hands get all bloodied in the process. Yet after she frees herself then grabs her coat, and runs out onto the porch, her hands are suddenly clean.