celebrinerd
A person who is famous for, or despite of, being geeky. Coined by Lev Grossman in a Time Magazine review of author and gameshow megawinner Ken Jennings book "Brainiac".
"Ken Jennings--you know, the Mormon computer-programmer celebrinerd who, beginning in 2004, rattled off a record-breaking 74-game Jeopardy! winning streak."