Same appeal as all the other decent hospital/cop shows of the time. Just because some of the tech scenes were did poorly on purpose doesn't mean the rest of it is equally bad. The cast, dialogue and plot were fine. Not sopranos or whatever, but definitely not "drivel". Not everything needs to be super serious all the time.

Edit: lul, the guy actually questioned his father's intelligence because they enjoyed NCIS. What sort of person judges others for their taste in art/hobbies? Jfc.