Personally, I'm happy to see the return of Fedora Hats, I think they're very stylish (i.e. why women are wearing them too). I also love the vests and scarves for men from the 40s.
In the 1960s I thought the ill-fitting tight suits looked great on men. Striped tops and long shoes and tousled hair. And... velvet suits a la Austin Powers - grrrrroovy baby.