Founder of Fog Creek Software, which makes an HTML editor/content manager called City Desk, and, in many people's opinion, exceptionally nice bug tracking software called Fog Bugz.
His weblog, Joel On Software, www.joelonsoftware.com 
, has lots of great articles on software.
I love how the name makes people refer to Joel as "Joel on Software." -- Daniel Brockman
That fact probably has more to do with "Spolsky" than "On Software". I bought his book before I ever remembered the name Spolsky long enough to tell it to a friend. -- Steve Jorgensen
He likes Big Design Up Front:
www.joelonsoftware.com ,
and Hungarian Notation, but no one's perfect.
Specifically, he likes good Hungarian, as opposed to the nonsense people seem to have perpetuated in its place.
He does something similar to XP's Planning Game - it's more-or-less the prioritization part without the scheduling.
Reviews:
JS has a clean and vivid writing style - a major acheivement considering the subjects. The drawback is when he's completely wrong he is very hard to counter. --Phl Ip
His essay on "Five Worlds" -- www.joelonsoftware.com -- sheds a lot of light on his skepticism about XP. XP methodologies are very effective in corporate-internal development like the storied C3 project, where requirements can change at any time over the course of the project, but they don't exactly add a whole lot when writing shrink-wrap software (his preferred world), and they'd probably be actively obstructive in embedded-software and game development. (There's a reason embedded and games are almost exclusively Cee Language and Cee Plus Plus.)
See original on c2.com