I never looked. Why do I want to see inside me? I avoid mirrors!!
I didn't look either... 
It was fascinating but then they weren't doing any TURPing, that might be too much to see live. It was a bit like one of those bus tour commentaries 'and here is your protate' and 'here we are in your bladder' and 'if you look you see the little jets of urine coming down form the kidneys'
I now know that they were looking for any signs of cancer as I'd been bleeding in my pee. Glad I didn't know that then.