The current choice is A Prayer for Owen Meany, by John Irving
You can Listen Again to John Irving talking to James Naughtie about A Prayer for Owen Meany on Radio 4's Bookclub.
John Irving on BBC Radio 4
Supplementary books are:
Andrea Levy: The Long Song - now on the Man Booker Prize shortlist
Marina Lewycka: We Are All Made of Glue
Harry Thompson: This Thing of Darkness
Barbara Demick: Nothing to Envy (Winner of the Samuel Johnson Prize for Non-Fiction)