"Not Hacker News," but I love this article, and it's been in my bookmarks list for a long time. I still haven't been able to spare the $700 for a meal at Masa... but it's on my bucket list.
On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.