noun
something worth hearing; highlight (of a program)
Refers to a story, talk, or audio content that is especially interesting or worth listening to. Also used for the best part of a broadcast or event.
彼の体験談はなかなかの聞き物だった。
His story about his experience was really worth listening to.
今夜のラジオ番組の聞き物は、人気歌手のインタビューです。
The highlight of tonight's radio program is an interview with a popular singer.
見物 means 'something worth seeing' or 'a sight to see', while 聞き物 is specifically about hearing.
Compound of 聞き (the continuative form of 聞く 'to hear') + 物 ('thing'). The spelling 聞きもの is a kana-mixed variant.