Being a staunch Mac user I first noticed this article here:

Published: LSD inventor's letter to Apple CEO Steve Jobs

http://www.AppleInsider.com/articles/09/07/09/published_lsd_inventors_lett...

The above article references a number of links, but finds its origin in the article below:

Read the Never-Before-Published Letter From LSD-Inventor Albert Hofmann to Apple CEO Steve Jobs

http://www.huffingtonpost.com/ryan-grim/read-the-never-before-pub_b_227887...

From Mr. Grim's article:

Steve Jobs has never been shy about his use of psychedelics, famously calling his LSD experience "one of the two or three most important things I have done in my life."

Hm… so let's see, I've dropped Steve Jobs' name, let's mention a few others.

[Kevin] Herbert, an early employee of Cisco Systems who successfully banned drug testing of technologists at the company, reportedly "solved his toughest technical problems while tripping to drum solos by the Grateful Dead."

According to Gilmore [John Gilmore was the fifth employee at Sun Microsystems], the maverick surfer/chemist Kary Mullis, a well-known LSD enthusiast, told him that acid helped him develop the polymerase chain reaction, a crucial breakthrough for biochemistry. The advance won him the Nobel Prize in 1993. And according to reporter Alun Reese, Francis Crick, who discovered DNA along with James Watson, told friends that he first saw the double-helix structure while tripping on LSD.