This stand allows you to use your laptop while laying on your back in bed. It appears to be quite adjustable (see diagram).
There are a lot of different companies selling this product (or at least what appears to be exactly the same product).
Lapdawg has it at $121, which was the highest price I saw, but it comes with a 30 day refund of $89 (ie they don't refund the shipping charge).
Another copy sells this item under the name Wizard, for $99 (free shipping).
You can also find what appears to be the same item on ebay, usually under the name 'folding laptop stand'. The price goes as low as $86 with shipping.
The product looks great in pictures (see esp. those on lapdawg's site, which has a bunch of product photos that highlight all the possible positions you might want to use it in). It also seems to be the most adjustable stand around.
Unfortunately, people who have actually used it hands on report that it is pretty flimsy and tends to break within months. That's pretty bad for a ~$100 item. If you buy the Wizard version, it sounds like it's pretty easy to get replacement parts, often for free, but even so it's quite disappointing. User reviews 1, 2, 3, 4 (older version). I'm giving this an "avoid" rating overall, which is a shame because, at least in concept, it seems like the best stand out there.