Interesting article over at CD Freaks discussing physical damage to BluRay discs. When BluRay launched the 0.1mm structure was feared to be very vulnerable to damage. Thankfully, largely due to a variety of 'hard coats' these fears very much proved to be unfounded. However now a series of 'drop tests' have been conducted. Unfortunately on a number of examples discs have been damaged. Anyway it's worth a read if for no other reason that to remember not to drop your discs!