Half-Life 2 is an amazingly cool game.  There are so many different modes of play, and the physical environment constantly changes.  The story behind the game (for people like me who have a hard time following plot lines) is incredibly in-depth and interesting.  Wikipedia refers to it as "Half-Life canon".  I was addicted to this game for most of the month of December, and the vividness of the graphics and storyline haunted me for hours after playing.  I'd say to Wendy, "I have to kill the zombies with a shotgun because otherwise the head crabs are still alive and will come after me."  Weird, frightening, yes.  But awesome. #entertainment