Activision has quickly gone from one of my favorite producers (MW2, Heavy Gear), to my most hated. I'm seriously starting to like EA more than them now. Just look at this:
# Call of Duty (2004) Java ME, Windows
# Call of Duty 2 (2005) Java ME, Macintosh, Windows, Xbox 360
# Call of Duty 2: Big Red One (2005) GameCube, PlayStation 2, Xbox
# Call of Duty 3 (2006) PlayStation 2, PlayStation 3, Wii, Xbox, Xbox 360
# Call of Duty: Finest Hour (2004) GameCube, PlayStation 2, Xbox
# Call of Duty: Roads to Victory (2007) PlayStation Portable
# Call of Duty: United Offensive (2004) Windows
# Call of Duty 4: Modern Warfare (2007) Xbox 360, PlayStation 3, Windows, Wii
# Call of Duty: World at War (2008) Windows, Xbox 360, PlayStation 3,
# Call of Duty: Black Ops (2010) Windows, Xbox 360, PlayStation 3, Wii (Unknown Release Date, possibally same as the other consoles release date), Nintendo DS
# Call of Duty: Modern Warfare 2 (2009) Windows, Xbox 360, PlayStation 3
Yes, that's 11 CoD games in 7 years.