I don't know, maybe it's just me, but I've always been into more muscular women than your standard anime female archetypes (the overly busty ones, the 'spunky' ones, the creepy loli stuff, etc). A big, powerful, buff babe who can get the job done.
The following is a list of ones I can think of off the top of my head. I'm always looking for more, of course. Suggestions would be appreciated.
Reiko Ando: Outlaw Star
Iron Virgin Jun: Iron Virgin Jun
Violence Jack: Rikki
Jun Fudou/Hunter J: Devil Lady (Go Nagai seems to do a lot of this type)
Genie: Rune Soldier