It does have some of the greatest boss fights in gaming. Psycho Mantis, The End, the battle against the army of MG Rays.

I love the series for it's philisophical outlook on war and what it means to be a soldier. MGS3's theme of the meaning behing patriotism was well written and executed flawlessly. To this day, it's still the only game that has moved me to tears.

I really want to plat Portable Ops, but I don't want to pick up a PSP since it has only four games I want. It's still too expensive. I don't even want to think about MGS4...