Monk was a great show, but it lost much of its original charm with time.
Monk is a policial show with some touches of comedy. I don´t think drama as a show quality as presented in the summary. That said I have to say that Monk started as a great show, but nowadays it´s just a good and fun show.
It has good acting and the acting didn't change at all. What changed for worst was the episode plot. It was extemely fun and imaginative before, but now it only gets the job done. Nothing really memorable now which is a real pity.
In the past, Monk was one of my favorite shows. Today I still watch it but I prefer watching other shows instead.