The Internet was all abuzz today with the bombshell that '70s child star Mackenzie Phillips had a sexual relationship with her father, the late musician John Phillips of the Mamas and the Papas, for 10 years. Phillips's memoir "High on Arrival" hit stores today, and she appeared on "Oprah" to talk about her experience, which she termed "consensual incest."

What followed was one of the most uncomfortable hours of television we've ever seen. When Phillips reads the passage detailing the first time she found herself having sex with her father (she had woken up from a blackout to discover what was happening and does call it rape), the audience is completely silent. The camera pans to a few shocked audience members.

Oprah Winfrey, meanwhile, is just flat-out flummoxed. This isn't kind, nurturing Oprah; this is confused, judgmental Oprah. She tries hard to hide her disgust at the 10-year relationship.

Phillips says she wrote the book to speak out about consensual and non-consensual incest because "I can't be the only person who has lived through this."

The sexual relationship ended when Mackenzie discovered she was pregnant and didn't know if John Phillips or another man was the father. Mackenzie had an abortion, which John paid for. John Phillips died in 2001.

But this being the "Oprah" show, we needed as "happy" an ending as you could find after 45 minutes of massively uncomfortable talk about incest. Phillips's "One Day at a Time" co-star Valerie Bertinelli comes out to lend support to her TV sister. Bertinelli talks about how "guilty" she feels about the bad rap Mackenzie got during their time on TV.

Phillips will be on "Oprah" again Friday to talk about the aftermath of her shocking revelation. Sister Chynna Phillips will also be talking to the queen of daytime television. Now that's going to be an uncomfortable family reunion.

Tell us: Should Mackenzie Phillips be the voice of consensual incest? Should anyone?