xbmc also has builds for the iOS. You'd need a jailbroken iDevice to get it to run, but you get the full XBMC experience (with apps, themes, weather etc) instead of just a remote to control your "other" instance.

See http://wiki.xbmc.org/index.php?title=HOW-TO:Install_XBMC_on_... for more details on how to install it on an iPhone, iPad or iPod touch