I've seen the first one a billion times. I hadn't seen it since the early 90's except maybe twice, but watched it a month or 2 ago and remembered at least half the lines by heart.
Fisher Steven's by far the best character in the film.
"I am thinking she is a virgin. Or at least she used to be."
"Oh. Her pants are blazing for you, New-ton Crosby."
I also really liked Skroeder, despite him being a total twat.
It's really a smart movie for it's class and era, and for an 80's flick, it still holds up decently. I always felt like it was a fairly realistic portrayal of robots, versus some of the other stuff out there.