Yes, I've met Hoid in the Stormlight books, and I'm looking forward to the Cosmere series. I didn't know about Cosmere until I got my first email reply from Brandon's associate, Adam, pointing me to his 2015 project update post. Then I saw the 17th shard forum icon, and here I am!
And yes, I realize his name is Brandon. I accidentally misspelled it when I was making my introduction post. It was autocorrected to Brian and I missed it before I posted. I went back and corrected it, but not before the damage was done. SORRY BRANDON! WRITE FASTER, PLEASE!?!?!? ;-)