Raideen is a awesome show for mecha and any oldschool anime fan. Cool and nostalgic, the series makes it best with a funny and great OST, facial mecha expressions and more. Half directed by Tomino (Episode 1-26) and Tadao Nagahama (Episode 27-50), you can find giant robots fighting in every episode, in the unique 70's art style. If you are a /m/ hardcore mecha fan, this is a must-watch.