We were brainstorming ideas on how to emulate the dynamic background in camera without actually standing above a sea of fog (which BTW is possible on a predictable basis about an hours drive west of here...). I remembered this:
I thought if you could make the bokeh look like stupid hearts, why not something more useful to the story? So instead of a heart shape, I made a slit (135mm Kmart lens f2.8 on a 7D):
Here are the results, before and after:
Here it is in motion. Forgive the shaky footage, I was handheld on a 135mm...
Blogger embedded video is pooptastic. Here it is in better quality on Vimeo: