Not everybody will like this type of transgressive, subtle comedy rooted in appreciation of character, but those how do will find it one of the funniest things they have ever seen.
The comedy of this show is basically about delusion. Almost all of the people in it are deceiving themselves about who and what they are. They are building castles in the air and refusing to accept their lives. The main character in the show and the butt of most of the humour is Clare, the American girl who starts the book group. Well-intentioned but also vain and naive, she looks down on the other girls for their ignorance and open sexuality, and refuses to admit to herself that her motive in starting the group is basically sex. She believes she has insight into others while in fact she has none, coming from a protected background, romancing her own life and failing completely to understand the earthy Glasgow people. The only character who is not comic is Ken, who is a paraplegic who has had to be realistic about his own life and who is turning his dreams into reality.
This comedy is also very transgressive. In one scene, Lachlan and Clare are having sex while he explains to her where her G-spot is.
But the real butt of the comedy is the audience. It asks us to re-evaluate our own intellectual pretensions and lives. This is why some people react so strongly to it. The humour arises from understanding and compassion. The Book Group is true art because it asks us to examine our own lives.
