I personally dislike shows with too much fanservs. First fanserv I've ever watched was, Labyrinth of Flames. Almost threw the controller at the TV during the first few minutes. Ever since then, I avoided as much fanserv as possible.
I sold my Najica Blitz set w/o even finishing the goddamn first episode. Couldn't stand her white panties. Ikkitousen, I finished watching it because I thought there would be better and more exciting fight scenes. O/w I would have given up long time ago. Plastic Litte: First scene, immediately changed to another movie to watch. Real Bout High School, SHEESH, story sucked, animation sucked, fanserv sucked.
I havn't even watched my Burn Up dvds even though I had them for a year. Maybe I should just give them away.
However, I did enjoy a couple:
Popotan has tons of fanserv but it is also one of the very few fanserv that has a pretty good story following through.
Tenjho: I'm 'totally into' Maya. I love her kid and adult versions. The fanservs didn't even bother me.
Burst Angel: I'm also 'into' Sei, not as much as Maya though! Hahahahaahahahahah Oh yeah, I'm a pervert! :p
Steel Angel Kurumi First Season: It's actually ok. I could still take the meatballs. Actually, I watched it because I found the whole thing 'pretty'.
R.O.D: Hey..it's a good series that I didn't even notice the fanservs.
Think that's about it. Brain's kind of charred right now to think properly.