Some restaurants in Zurich such as Nooba (www.nooba.ch) are almost always packed and completely smoke free.

I too thought I'd never see the day, but since the days of the big thread on smoking in restaurants thread from last year many things seem to be changing. The only question is how quickly?

Some extremely related threads to this one:

Smoking in restaurants (Complaints Corner)
Petition to ban smoking in restautants (Swiss Politics and News)
Non-smoking restaurants in Zurich (Entertainment and Dining)

There are also links to many similiar news articles on the first thread on that list.