My school has everyone using tablet pc's, the convertible kind. Since they all pretty much have integrated graphics the main reason I came to GOG is to play old great games like in the article. It's made me appreciate them a lot more especially running old emulators and such. I don't use the actual tablet part though for gaming, seems kind of pointless.

yeah, well it's subsidized so most people have the same model thinkpad, but the idea is that people can take hand written notes as well as type tests and such. it actually works pretty well.

Interesting article, and that Samsung gadget looks like a cool device...
I play a lot of point & click adventure games on my convertible-type tablet PC. It works really well with the old ScummVM titles and also with more modern games like Telltale's Sam & Max series.
My PC has a Wacom active digitizer (electromagnetic resonance based). This is great for adventure games because the screen can read the position of the stylus even when it's not touching the screen, i.e. you can move the mouse pointer without clicking, which can't be done with resistive screens.
The only real problem I've run into so far is related to the screen resolutions old games use. The stylus calibration gets out of whack when I don't use the screens native resolution (1280x800), so I play ScummVM games in windowed mode to get around this. The four adventure classics that LucasArts released on Steam earlier this summer can go fullscreen without changing the resolution, which also resolves the problem.
There are different methods for different types of tablet screens. With the active digitizer screens, the stylus has a button that you can hold while tapping the screen to right click. As Aliasalpha already mentioned, other types of screens may use tap-and-hold or similar.