Wu's fans come from all walks of life and give different reasons for liking him, but a common denominator in his appeal is his lively Fukienese, which carries a southern accent.
「有時候提到一個庄頭，連住在當地的人都會懷疑我是從那裡出來的」，吳樂天說。他還常穿插一些現在較少見到的童玩，例如打彈珠、打陀螺、釣田雞等，以喚起聽眾童年的回憶，增加一份親切感。喜歡聽吳樂天講古的階層相當廣，迷上他的原因也不一樣。