Plants Vs Zombies
This is one neat touch friendly game that works very well with your S10-3T.
PopCap - Plants vs Zombies
PvZ Free Version
Free web version through your browser.
PopCap - Free Plants vs Zombies
Battle For Wesnoth
This is a neat game that uses the touch screen of the S10-3T well. It's a free game that can be downloaded at wesnoth.org.
Many game emulators will work well with the S10-3T. I have tried NES, GBA, and N64 emulators. You can also use USB controllers, which should make things a bit more enjoyable.
A neat list at:
Gaming Bolt - 100 Games To Play On Your Netbook