I too watched that Dr. Oz segment, and still have it saved to DVR.

Interestingly, Dr. Oz did another segment at one time where he actually had his own colonoscopy video'd for the audience. Unfortunately, it didn't turn out quite so well for him. (Read the story at link below.)

I used to regularly watch Dr. Oz, but then decided he was using too many scare tactics, and also with his focused concentration on healthy eating, if I followed all his advice, I'd be bankrupt. Who can afford to shop at Vitamin stores for expensive homeopathic plant derivatives on a regular basis? (For example.)

Dr. Oz had to confess after this that he really doesn't know everything, especially that following all his health hints doesn't necessarily mean you'll escape invasive critters. (I wonder if he's adjusted his own diet, which now must include a little crow.)

Kudos to Dr. Oz for this important story.
http://www.time.com/time/specials/packages/article/0,28804,2075133_2075127_2075098,00.html