I got a door ding at work (yeah...I KNOW WHO DID IT). Head of security for my office building did it...
It was a serious dent though, no paint damage. Spend about 8 hours with a ding king and a hair dryer fixing it. Luckily, I have had to do this before and it is 98% gone. You can really only see it if u kneed down and look up at the car from 6 inches off the ground.
In your case, that sucks much worse since its a crease. Looks like a good shop could get it repaired (possibly without having to repaint). But if insurance is paying I would just have it repainted and even maybe a new set of panels, the paint in the area of the crease may have been stressed and eventually will show tiny cracks once it goes from cold to hot and expands.
135i M Sport Silver/Coral Red, Premium, Cold Weather, DCT.
Will be adding the PPK/Exhaust someday!