Gurren-Lagann is the best thing sliced bread.
It is full of symbolism, philosphy, ideals and strong message about moving forward.
The concept of evolution is very strong in Gurren-Lagann, you must move forward, but you will destroy everything by doing so, will you do it?
The animation is superb, 22000 frames per episode is really serious. It's like watching five shows at the same time.
The characters are perfect. Kamina, Simon, Nia, Yoko, theu are more than chracters they are live people.
Gurren-Lagann is the anime that will define anime for centuries to come, believe it!