Not much.

Enders Game Series really moved me.
Ursula Le Guin of course.
I'm famililar with most all of Philip K Dick's work.

There is basically a Top 100 Sci Fi torrent for audiobooks and I downloaded it and have been chipping away at it for a while.

Sometimes I have real trouble with Sci-fi, because the words of the alien races and stuff like that really don't mesh with me.

It's like a lot for me to remember. I didn't do so well with the LOTR for that reason as well.

Cryptonomicon - Stephenson
Out of the Silent PLanet - Lewis
Slaughterhouse 5 - Vonnegut

Read those.

Also listened to a star wars radio drama recently which was cool.