First of all Marple, thank you for finding the orchid board and for asking these questions! It kind of makes us feel like part of the show!
Paraphalaenopsis serpentilingua is often referred to as the "serpent orchid" because it's lip resembles a snakes forked tongue. Its leaves are also round (terete) and some think that is why it is called the snake orchid. It shouldn't be to hard to find, I have one but it is a couple of years away from blooming.
Paraphalaenopsis serpentilingua:
Paraphalaenopsis serpentilingua Species Orchid Plant - eBay (item 130243433415 end time Aug-31-08 06:38:12 PDT)
There are a few phalaenopsis that have leaves that resemble a snake skin, P. schilleriana being one.
Thanks for bringing some accuracy to the show, it also gripes me when blatant errors are made on television.
Al