Sick-sticks are just a different form of tazer.

Eye transplants require better surgical techniques for the optic nerve to last.

Reading the future is impossible.

People are actively working on cognitive enhancers without side effects. They won't be stealthy once they work.

Keeping people in stasis requires a better understanding of brains.

Electronic Ink is getting better, but video on a reasonable display will take some time.

Gestural interfaces work fairly well, but the only deployed systems are for games (EyeToy for PS2). This has room for growth. But the large screen would probably be better used for teleconferencing as remote teams need better tools than we have today. But Wii and Multi-Touch IPhone are almost there.

The spider robots must have had an incredible amount of computation and powerful sensors in order to map a room, detect people, and locomote. The mobility platform wouldn't be that hard to build, but would be fragile compared with the treads you find in today's military robots.

Seeing people through walls is done with radar by the military today.