Games with some of the best designed boss fights:
Metal Gear Solid series
Portal 2
God of War series
Painkiller (the original)
IL-2 Sturmovik 1946 (not exactly boss fights, really difficult missions with great Ai strategy and placement)
Metal Gear Solid series
Portal 2
God of War series
Painkiller (the original)
IL-2 Sturmovik 1946 (not exactly boss fights, really difficult missions with great Ai strategy and placement)