The lock screen on the Bionic shows the vivid qHD display to good effect.
The MotoBlur UI that is a trademark of Motorola phones has been tamed down significantly in this latest version. The Bionic is the closest to stock Android than any of the Motorola Droid line of phones.
The back is a single piece cover that provides easy access to the battery and microSD card (16GB preinstalled). The 8MP camera with dual flash is in the uppper right.
Power button on the left, 3.5mm audio jack on the right
microUSB (charging, PC connection, docking port); HDMI out
Nexus S 4G in the background. Note the thicker hump on the Bionic at the top of the phone around the camera.
Left: Droid Bionic
Right: Nexus S 4G
The Bionic is roughly the same thickness of the Nexus S, while a bit larger due to the 4.3-inch display.