Kamina is legend.
It's a great anime, but there will never be another Kamina. That's why it's 9s across the board for me excepting the 'character' category, which I gave a 10.
Story [9] - Artfully spins a wise narrative out of the timeless concept that is the indomitable human spirit.
Art [9] - Imperfect but stylish in a way that bespeaks another time in anime, when animation sought to dazzle before it worked to convince.
Sound [9] - This anime will put hair on your chest, and so will its soundtrack.
Character [10] - Like I said, Kamina is legend.
Enjoyment [9] - I can't deny that it gave me chills a number of times.
Overall [9] - It really is a great series, and probably the most truly badass anime out there. You might find one that's cooler, but I'd wager that none will go as far as Tengen Toppa Gurren Lagann — it romanticizes the very idea of badassery.