Visiontek TV Wonder HD 659 Hybrid TV Tuner for $69.99 Shipped

This is a very full-featured HD TV Tuner for just $69.99 shipped.  It adds just about all the functionalities conceivable for a HD TV tuner, such as electronic program guide, video recorder in high definition, video capture, remote, and much more.  Most places sell it between $100 to $130.