Deep Fritz 8 Simply the most powerful chess playing program.
Chess: 5334 Problems, Combinations and Games Great 1, 2 and 3 move combinations.
Chess Tactics for Champions: A step-by-step guide to using tactics and combinations the Polgar way
Chess Tactics for Kids
Chess Strategy in Action
Garry Kasparov on My Great Predecessors, Part 5 The entire series by Kasparov is excellent!