I know I've already posted quite a few links to articles about computer games, but this one simply blows them all away:
Cultural Wargames
Here's one quote, but it doesn't do the article justice:

Despite the nay-sayers, games are still in the enviable position of being capable of expressing experiences other forms have had difficulties with, where its competitors' possibilities are at least partially quenched. While film, and its smaller-screened sister television, casting the last hundred years in soft, flickering light, still achieve magnificent things, its ideas and boundaries are increasingly well plotted. Games have barely even started.