Just this week, actually: male co-worker (not the same firm as mine, we're both consultants assigned to the same project, though). I didn't exactly 'respect and admire' him but I liked him well enough on a coffee break buddy sort of level.
I was having a bit of a moan about one of my software developers (which I shouldn't, really, but she pissed me the fuck off) and he took this as an opportunity to join in and moan about ... her looks!
You've never seen me go from angry at someone to protective about them so fast. Yes, she drives me nuts, but that's because she's a moron, not because she's not pretty enough or not sufficiently fuckable! She actually looks decidedly average to me but I still wouldn't care if she looked like the love child of a stranded whale and Yoda. She's not there to entice the men but to write software for me. Unfortunately, she kind of sucks at this, but that's about the only problem there actually is!
When I challenged him he didn't see why I was pissed off about it because according to him I'm gorgeous. I reckon this means I should hence be fine with women being put down for supposedly being ugly. Well, I'm not! 
I've now had to move co-worker as 'chauvinist arse I'm trying to avoid' category.