Can you really use a Macbook Air, 11" specifically, as your only computer? Now let's be serious for a minute. I'm talking about us geeks, not the every man common folk. I'm also talking about hooking it up to a big display as well, as we geeks like to do. Playing the odd starcraft 2 game, running many tabs in Chrome and encoding the occasional video is something we also may do. Can we really do it using the new MBA? Are we going to suffer from a big performance hit?