Yeah, it's the most successful anime that most fans forget is anime :)

There's also a comic adaption of BOTP planned by Alex Ross [who did the new DVD art] http://alexrossart.com/ and a lot of parodies and references in other shows [Nurse Witch Komugi-Chan cosplays as them in her show, a recent disney TV show with kid superheroes had villans modeled after them, and Megas XLR has characters mocking them and the Power Rangers]