I'm surprised nobody mentioned Tekton. Actually being sarcastic here as I've always been a more traditionalist in the way speakers look and couldn't handle having to look at some of the weirder (IMO) designs that have been posted regardless of how good they may sound.
Some of my favorites would be what others mentioned, Salk for one. I like ATC, Proac, Joseph Audio, and also have a liking for some of the 70's design like JBL, AR etc.