I think Steins;Gate is possibly the greatest anime there is.

I seriously, seriously love this show. I actually bought the bluray without knowing a thing about it, as someone was giving it a spectacular recommendation, and it was a chance worth taking. It starts off a bit slow, but builds up some of the most endearing and wonderful cast of characters, laying out plotlines that you mightn't quite notice the importance of. It's funny and unique, but the intensity of the plot unfolds rapidly into one of the most incredible emotional rides I've ever experienced.

If you've not seen this, see it.

It's also got a terrific opening theme!