The other day I tried watching a 1080p mkv file on my 2008 unibody MacBook connected to a 30" display via the miniport cable. Although I didn't have the picture at full screen size, the constant stuttering made it impossible to watch. Would, say, the current model 17" MBP be able to handle playback of 1080p files (connected to the 30" display) without issue?
Also, although not the right forum, would the ATV2 be up to the task as well?
Also, although not the right forum, would the ATV2 be up to the task as well?