GameStop Corporation 's a video game and entertainment software retailer. The company, whose headquarters are in Grapevine, Texas (a suburb of Dallas), United States, operates 5,889 retail stores throughout the United States, Canada, Australia, Ireland, Denmark, Finland, France, Germany, Italy, New Zealand, Norway, Spain, Austria, Puerto Rico, Switzerland, Portugal, Sweden and 2 test stores in the United Kingdom. GameStop's expected to open around 600 new stores for the 2009 business year. Reta… (More on Gamestop)