Does it have to be recent or just any texts?
Probably preferable that something is unusual and not too long. In general I think crime thrillers, despite their popularity are a bad idea as they leave little to discuss really except the plot.
For book clubs, it was my understanding that discussion/debate revolves more around writing style, character development, literary devices etc?
The Outsider (Albert camus) is short, and on the surface uncomplicated, but has emotional and philisophical depths and features an unusual, direct writing style.
1984 (George Orwell) is relatively short too and comparison with the imagined and actual future should provide endless discussion.
Longer, but crammed with unusual characters and events, and a real emotional rollercoaster is John Irving's The World According to Garp.
Kazuo Ishiguru's The Remains of the Day is a beautifully written, well observed poignant novel.
Some ideas anyway...