Every now and again a condensed typeface comes around that simply knocks my socks off. T-Star by designer Michael Mischler is one of them. Originally designed for the book Los Logos, T-Star is a condensed sans-serif that features 9 weights and some interesting details like the Q. I love how simple and light the face feels overall.
Alex of Thinkdust informed me about an elegant new typeface family that he designed called Hiruko. It comes in a variety of styles including Regular, Alternative, Light, Oblique, and soon Heavy, Medium, and Outline. You can purchase the fonts at the site.