You can get this effect by either buying a tilt-shift lense or getting your lense and taking it half off and tilting it on the body, being sure to compensate the exposure. Anduhhh don't do it too often because I'm sure some dust gets on your sensor.
Interesting technique -- it looks as if your bokeh runs from upper right to lower left. (How do you hold the lens partly on the camera? I know I'd drop it. 8))
I wonder how this would be in b&w or toned to make it look old-timey.