Infinite Jest, by David Foster Wallace

Amazon.com
In a sprawling, wild, super-hyped magnum opus, David Foster Wallace fulfills the promise of his precocious novel The Broom of the System. Equal parts philosophical quest and screwball comedy, Infinite Jest bends every rule of fiction, features a huge cast and multilevel narrative, and questions essential elements of American culture - our entertainments, our addictions, our relationships, our pleasures, our abilities to define ourselves.

Midwest Book Review
Set in an addicts' halfway house and a tennis academy, and featuring the most endearingly screwed-up family to come along in recent fiction, Infinite Jest explores essential questions about what entertainment is and why it has come to so dominate our lives; about how our desire for entertainment affects our need to connect with other people; and about what the pleasures we choose say about who we are. Equal parts philosophical quest and screwball comedy, Infinite Jest bends every rule of fiction without sacrificing for a moment its own entertainment value. It is an exuberant, uniquely American exploration of the passions that make us human. Infinite Jest is one of the those rare books that renew the idea of what a novel can do. Infinite Jest is perhaps the most innovative novel in the English language since James Joyce's Ulysses.

Review of Contemporary Fiction
Wallace offers huge entertainment...only Gaddis and Pynchon have this range. So brilliant you need sunglasses to read it, but it has a heart as well as a brain. Infinite Jest is both a vast, comic epic and a profound study of the post-modern condition.