Battles with Integrity

One of my new schoolmates is vision-impaired. I intend to invite him over sometime soon for dinner and after-dinner entertainment. I'd love to introduce him to the wonders of gaming, but what games are best enjoyed without needing sight as an essential component to play. Almost all of my card-based games are out, as is most of the Days of Wonder catalog, alas. What do you recommend?

ca_snowflake recommended that some icehouse games might work well, when playing games that don't involve the colors of the pieces.

Maybe I should skip board games altogether and go straight to RPGs? Anyone know where I might get some Braille dice, perhaps?

Edited to add: I found an interesting article on the subject.