Today's rate the Japanese animation studio segment features Gainax. Home to some of the most acclaimed anime of all time (in their prime) and occasionally suffering from budget cuts which they're infamous for. Some of their most well known anime is that one mecha anime filled with psychologically broken people, sentient biological mechas and apocalypse scenarios on Biblical portions known as Neon Genesis Evangelion. Another mecha series they're famous is filled with drills and logic breaking optimism that end up making Dragon Ball franchise battles look like child's play that is known as Gurren Lagann.
They're also popular for the coming-of-age series filled with some of the best fight scenes I've seen in anime and is one hell of a trip known as FLCL.
Here's a list of past segments: