Try asking someone to explain the whole of Gurren Lagann to you. Before long you'll find them fumbling over their words and ,not soon after, slip into an incoherent psychobabble. This is why Gurren Lagann is so great. The show goes all out from the first and never really steps down from its stage or slows down even in episodes that are meant for development.
It is hard to try and review Gurren Lagann for its plot, setting, character development or anything that you were forced to dissect an enjoyable book into a chore to get your hands on in high school English. All it is, all it is about, is fun and without saying to much this becomes very prevalent in the later episodes.
A lot of stories seem to think that ass pulls; those story breaking scenarios/powers are okay as long as they are justified through lore or science however I believe this is insulting. Viewers are smart enough to know when something shouldn't or couldn't happen and trying to convince them, hoping they haven't sat high school science, with bare bones reasons is really insulting and breaks immersion horribly.
However Gurren Lagann doesn't have this problem. The creator gets you're here for fun not for a science lecture.
With that said I do not believe there's really much else to say about Gurren Lagann. It's purely for fun, not to be artistic so dissecting it into an essay about animation quality, sound quality, story and whatnot would be pointless.
You'll either like it or dislike it but if you like it you'll really like it.
