Yeah...lol. I remember watching a "Cow & Chicken" episode and hearing his voice, I knew right away that it was the same voice actor for Colonel Campbell...after that I had to watch the rest of the episode .
In an interview Campbell's voice actor said that he was in the movie "Biodome", it's some really small role...I think he's one of the Project Manager's employees and has only one line. During the interview he said he wasn't familiar with the Metal Gear Solid storyline, I don't think that he ever played the game, but he said that he was really intrigued by the weird lines that Campbell had in MGS2...those of you that have played it know what I'm talking about .