Panty & Stocking with Garterbelt was animated by Gainax in a distinct style resembling and homaging American cartoons. The theme of the series is “vulgar and indecent jokes” with director Imaishi Hiroyuki saying “If we are going to do this, we will try it thoroughly”. Wakabayashi Hiromi, who provided the initial idea for the series, cited “Drawn Together” as an inspiration for the show’s crudeness.
I thought the style looked strange for an anime, but I guess with Gainax, when they pay an homage to something, they really go all out. Thanks again to Stilzkin for sending this!