Construction Crane -- NEX-5 & Leica-R 35mm f2.0. Click to see larger.
The Leica-R 35mm f2 remains one of my favourite lenses in 35mm focal lengths. The other two are Canon 35mm f1.4, and Carl Zeiss 35mm f2.8 Distagon (both the Rollei mount and Contax mount). All of them are very well made (with the Canon the least good), and are optically superb. If you like this focal length, be sure to check out one or all of them.