a show-stopper

a performance or part of a performance that is extremely good Her conference speech was a real show-stopper.

Name	Pronounced	Usage
Conchobhar	-	Irish, Irish Mythology
Darius	[də'raiəs]
Tahvo	TAHH-vo	Finnish
Jaida	JAY-də	English (Modern)
Rosemary	ROZ-mə-ree	English
Debra	['debrə]