I've had a few mandatory exams, first was when I joined the army.
About 15-20 of us, stripped to our underwear while they did the basics, HEENT, height weight etc. Then they had us do a weird thing where we try to waddle in various positions, range of motion test I would imagine. Then had us lose our shorts and line up in 2 rows where they checked our genitals/hernia check, and our butts for I think hemoroids. Then still nude they moved us into the lavatory to pee in cups. That part was the worst, they had a guy (aka meat gazer) walk around and watch to make sure we didn't sneak in a different jar of pee.
My second mandatory exam was with a company I was working for. If you were injured/car accident or anything of the sort they made you go in. Some guy hit my truck so I had to go in for what I thought was just a drug test, but they ended up doing what is basically a physical exam to make sure we weren't injured at all (to protect themselves from lawsuits). So had to get taken to the clinic, it was pretty fun. Very attractive, young, latino woman as a doctor, did all the basic checks, only thing I found interesting was she did the genital check in the supine position, I've never had a doc to it that way.
And my 3rd mandatory exam is actually in about 2 weeks. Going back to school and the university said it's mandatory. At the school health clinic and I'm rather hoping to see a medical student or two during the physical, never really had an audience other then just the doctor, would probably be fun.
And the country is America, in the Southwest.