Of course if you're going to bring up Batgirl then you have to also mention Catwoman. She has been portrayed by several well known actresses on TV and in movies. Most notably by Julie Newmar in the 1960's TV series.
The "sexual tension" between Batman and Catwoman has always been a major part of the series appeal. While doing "research" I came across a comic where Batman finally proposes to her.
Here are three different portrayals of Catwoman from the comics:
"Holy Autoerotic Asphxiation Batman!"
There always was something "dominatrix like" about her...
Of course I'd ask her to marry me...