before HIPAA my students/volunteers could watch surgery, see patients in the clinic, essentially get by w/out anyone really questioning.
after HIPAA no one in the OR, clinic, they can only be in the lab/office where they're well out of the way of seeing patients.
It's too bad, the restrictions have gone just a bit too far. I work w/ HIPAA stuff everyday, and it's a good idea, just it's not being implemented correctly and is overly restrictive of normal research activities.