Steins;Gate

Watched Steins;Gate. There's a man who acts a mad scientist and with the help of a few friends, he tries to come up with a time machine. The mad scientist starts off rather childish but the more he explores time-travel, the more he changes. More and more does he realize the consequences of his seemingly innocent experiments.

If you watch it, make sure to watch it all. It gets particularly interesting in the last episodes.

The technology doesn't look anything serious, though. Theory is also distorted and illogical. But story-line and ethics are really really good. It may not look it at first, but after watching the last episodes, everything comes together very nicely.

Found the anime thanks to this AMV: