popular program; hit show
Refers to a TV or radio program that enjoys high viewership or ratings. Often used in media contexts.
This popular program is broadcast every Friday.
He became famous as the host of a hit show.
人気 means 'popularity' in general, while 人気番組 specifically refers to a popular broadcast program.
番組 is a neutral term for any broadcast program; adding 人気 specifies that it is popular.
Compound of 人気 (にんき, 'popularity') and 番組 (ばんぐみ, 'program').