PS3-Sense writes: Call of Duty: Modern Warfare 2 has a Spec ops mode. This mode gives you the oppurtunity to play with your friends or family over the web or at your home.
A member of PS3-Sense discovered that it's possible to earn all 69 stars in Modern Warfare 2 by a hack in the savegame. Of course he filmed this and shows us how to earn all 69 stars. Infinity Ward didn't responded (yet) about this hack.