I've been watching Japanese animation for a few decades now, and occasionally I'll get so weary of the more mediocre and repetitive products of the anime industry that I'll be tempted to think the industry's best days have ended. Then I see a series like 2007's GURREN LAGANN, which takes a concept as shopworn as giant combining robots and turns it into a brilliant work of storytelling, filled with emotion and wonder (not to mention quite a bit of silliness).
GURREN LAGANN doesn't look quite like any TV anime before or since. It starts out featherweight and then keeps spiraling (pun intended) into something that touches on the profound -- without ever growing ponderous.
And fortunately, the series is available online at Hulu.com: