Improve Your Chess: Highly Instructive Games - Kasparov-Shirov 1994

Kasparov makes a stunning, instructive, and memorable exchange sacrifice on move 17. He gains a slight advantage but both sides play some slight inaccuracies, eventually leaving Kasparov with some trademark attacking chances. Then the tactics really begin to fly as Kasparov does his stuff and finishes off Shirov in a superb manner (once again!).