Looks like Gorilla Glass is fast becoming the trend among tablets and smartphones - not only is Samsung slapping it on their Galaxy S devices, but the Tab as well. What's so great about Gorilla Glass? To quote Wikipedia:

Corning attributes the choice of Gorilla Glass superiority not only for "unparalleled damage resistance and protection" but:

• "Thinner form factor: Gorilla Glass retains its performance advantage over standard chemically strengthened substrates even when used in thin form factors.