We have covered plenty of interesting robots here in the past. This Mobile Snake-arm Robot from OC Robotics is quite interesting though. It features 1.5m of articulated reach and a 90-degree cumulative bend. The arm is mounted on an untethered, omnidirectional vehicle, so the robot can explore hard to reach areas. The snake-arm robot can be controlled over WiFi.
As you can see in the above video, this robot can be used to investigate hazardous or hard to reach areas. It has an integrated navigation and inspection tool. More information is available here.