The chinese water torture episode

Anyone have any info on why the Discovery Channel never re airs that episode? I haven't seen any screencaps on the net of that episode. Is it available on dvd? If anyone has any screencaps let me know. For those that don't know about it, it's the episode where the MythBusters were testing if Chinese water torture actually worked. They had kari tied up as the water dripped on her forehead. She ended up crying and they had to release her. I think they also tested it on Adam but it had no effect.