I've just ordered a 0.5m Micro HDMI to HDMI cable for it which should remove a massive amount of cable.
The Atrix Lapdock has a MALE Micro HDMI and a MALE Micro USB connector
I use a FEMALE Micro HDMI to FEMALE Micro HDMI adapter http://www.ebay.co.uk/itm/320786316751
I also Bought this FEMALE Micro USB to FEMALE USB A adapter cable http://www.ebay.co.uk/itm/320741927842
I Cut off the USB A FEMALE end and also cut a standard Micro USB cable in half. I attached 5V & GND to the micro USB end and GND, D+ and D- to the USB A Male.
This means the the 5v + GND lines from the lapdock usb goes to the micro usb connector and powers the Pi and the Data and ground lines go to the USB A Male like any USB peripheral and connect to the PI USB port to connect the keyboard and the trackpad.
This allows the Lapdock to power the PI from its battery / mains adapter and gives me an 11.6" screen , a keyboard and trackpad. It also battery powers the PI.
The screen is crystal clear and very bright. I'm really impressed
This would have been 3 weeks ago but the adapters (linked to above) took 3 weeks to arrive!