Here's what I know:
The design about Samsung was also used by Vadem CLIO in their ... well ... CLIO HandheldPCs running WindowsCE 2.11 and 3.0. It was (or is?) one of the first PDA sent up to space for astronauts to use. Unfortunately when I owned one, I realised that gravity was not on my side. Lugging a 3lb tablet is not as fun and having DSTN screen is a booboo as well. But the 3-mode tilt-swivel screen is really cool.
The IBM design for a notebook that transforms into a desktop is called a IBM Transnote Thinkpad (or just Transnote) 570 (I think its 570). Check out thinkpadforums.com for shots of it.
EDIT: The "Laptop with stylus." looks like the new AcerNote tabletpc.