You can just fuck off. Gurren Lagann was definitely rewatchable. The more times you rewatch, the more you relive the action. And not just that, you discover even more of the brilliantly executed and wonderfully subtle foreshadowing, symbolism, and deeper meaning of the show. Even though it looks like a generic super robot animu at first, it's so much more, and you have to rewatch it a couple times for everything to sink in properly.
tl;dr - Pic very related.