An Olympic Improvement.
I think it is probably right to say that McKayla would have been impressed if she did a "back to the future" to ...
A physical 3D table like in X-Men, cool!
If you put a million monkeys at a million keyboards, one of them will eventually write a Java program.
The rest of them will write Perl programs.
A 240 years old programmable writing automaton.
A Google Street View car that took a picture of itself :-)
The new robot from Boston Dynamics: WildCat.