The "Anymode Smart Case" for the Samsung Galaxy Tab 10.1 has been pulled from the market by none other than Samsung itself, due to lack of proper "Designed for Samsung Mobile" certification on Anymode's part. The Smart Case bears a strong resemblance to the iPad 2's Smart Cover, which led to some pretty harsh criticism when it was first released, and probably to its current situation as well. It's worth noting that while the Anymode case may look like Apple's Smart Cover, it doesn't offer the same functionality (i.e. sleep mode, etc).
Samsung had this to say about the case:
As a general practice, Samsung Electronics reviews and approves all accessories produced by partners before they are given the “Designed for Samsung Mobile” mark.