Steins;Gate is the most recent anime that really captivated me and I even managed to marathon it again last weekend (Though that was in part due to being without Internet and only had access to stuff on my laptop).

As for older anime the original version of Cardcaptor Sakura is much better than I thought. It has that typical Clamp QUALITY but it's easy to get used to and it's not as bad as their other series.