I just thought I would add a few to the list:
Plastic Little - There's a long scene right smack in the middle of the movie where the two main girl characters take a hot bath together. When one of the girls takes her shirt off, she's got her boobs wrapped up because they are so big, and the other girl freaks out and starts complaining about how small she is. The art is fantastic.
Master of Mosquiton - The artists are obviously BE fans. One of the supporting characters does a transformation every time she uses her powers, from a little girl into a buxom woman, including panty and breast shots as she transforms. The bad guy on the first tape (the sphinx) has abnormally huge knockers, and on the second tape Mosquiton's vampire bride shows up and she's stacked, making the main girl jealous. Haven't seen the last tape.
Adventures of Kotetsu - For a series about sword-fighting, it's got more fan-service than you can shake a stick at. Within the first two episodes alone, you see all four of the girl characters either buck-naked or wearing towels. There's a scene where one of the bad guys transforms into the main character with bigger boobs, and other stuff.
Golden Boy - I love this whole series, but episodes 1 and 5 especially have an emphasis on sexual inuendo and bouncing female body parts. The first episode is one of the best bouncing breasts animations I have ever seen, period.