You will come to understand that video games are an artform when you start playing Starcraft.  First, you'll find a story which masterfully weaves between 3 different races in grand, interstellar conflict, with a cast of hundreds.  This story comes to you in movies, in briefings, and in the game itself, such that you actually play the story, and react against it (or drive it forward).  I've played this game from start to finish 4 times now, just to relive the amazing tale.