No, this is NOT a node on fellatio
by anime women
Anime that attempts to be more realistic with human anatomy allows an easier suspension of disbelief. Examples I can think of off the top of my head include Ghost in the Shell, Ninja Scroll and Patlabor.
The cheaper, more kiddie-oriented anime such as Sailor Moon use unrealistic heads on the characters. The heads are an inversed triangle with huge eyes, a hint of a nose (unless you get a profile, where the nose becomes large and pointy), and big hair.
I was watching some news on MSNBC, and there is a female reporter named Chris Jansing who actually has an Anime Head. Her cranial shape is triangular with a very pointy chin and nose, huge eyes (helped with an overabundance of eyeliner) and a large helmet of big round hair. So, after this sighting I guess that the cheap Anime Heads can be realistic, but are not prolific.
I still am of the opinion that the more realistic the anime, the easier it is to get involved in the storyline. Cheaper animes need to have an amazing storyline to overcome the cheapness of the animation. It can be done, but it is a rarity.