Doesn't happen very often, but you can try mentioning a guy's clothes, saying that you like his shirt, pants, shoes, etc. Doesn't matter if he's dressed up or in jeans and a T-shirt. If you do it right, he might elaborate on where he got his clothes and that might lead to other topics of conversation. Granted, most guys (including myself) aren't terribly concerned about our wardrobes, but it's a starting point anyway.
I know for myself that it's easier for me to talk to a woman if there's something concrete I can start a conversation about .
And if you don't mind me saying, I really appreciate your contributions to this forum.