My old Moto Atrix has HDMI and USB plus Wifi and also came with a Bluetooth keyboard and mouse.
Great it is as I just need to hook up to a HDMI monitor and away I go however I love my desktop much much more as the phone is just powerful enought (2 core Tergra) to do basic stuff like email and web.
If the phone can be come a truly portable comparative of today's modern desktop PC with Nvidia CUDA core then bring it on, til then it's still my desktop