We could work our way through this list
Dr. Peter Boxall's 1001 Books You Must Read Before You Die
Also a good website for tracking, organizing and reviewing your books is Goodreads. I have a page there and it's been awesome. No more keeping track of pieces of paper with recommendations. A lot of my friends are on there too so I get a lot of ideas from them.
You could start a shelf on that site for this club and people could put their suggestions in the queue.