What happens you mix a well-known and loved co-op title with a well-known and loved title that just recently added co-op? One would presume the answer would be "a whole lot of awesome," and we certainly hope that proves to be the case. In a rather surprising reveal yesterday from Famitsu magazine, the latest entry in the Metal Gear Solid series, Metal Gear Solid: Peace Walker for the PSP, will include bosses from the popular dungeon crawler/MMO co-op franchise Monster Hunter. While it's great that Peace Walker will be integrating some very solid co-op experiences into the game, we must admit that mixing these two titles together is a rather interesting choice and one that we're certainly eager to try out. The crossovers and tie-ins don't end there, however, as Hideo Kojima had a few more interesting reveals today.