Favorite RSS feeds

We've done bookmarks and "deserts" so...

[photon]

What are your favorite RSS feeds? How often do they update?

I'm just getting started with this so I don't have many to contribute--I'll start this off with WebmasterWorld's own RSS feed [webmasterworld.com].

[your_store]

Two usually web design related feeds:

[37signals.com...]

[kottke.org...]

Both are updated at least daily.

[photon]

Thanks your_store.

Surely there are others who have favorites....