Remember last week when it was announced that Tig Notaro is getting her first HBO special? Well now she is releasing that documentary she made two years ago. And on Showtime of all places! Knock Knock, It's TIg Notaro reveled at TCA that the film is slated for an April 17th debut on the paid cable channel. You may remember this as that contest type thing where Notaro was showing up at her fans homes and performing some stand up. People were treated to only a few minutes of the set but they had their chance to have their home invaded by Notaro. If only she came to me. We could have played Mario Kart.