5 was my limit, but older anime goes about that large pretty regularly (Ranma, Macross). Your example from that show reminds me of a woman I know with perpetually dilated pupils because of her many ears of drug use when she was a young teen. I would accept something like 9 if it was used for humorous effect, but there's not a lot of anime I think is genuinely funny (which for me was Shin-Chan and FLCL). Shin-Chan had some crazy artwork, but was easily one of my favorite comedies. Actually, for some reason it reminds me of Panty & Stocking... which had it's moments.