I read far too many blogs and end up just skimming over a lot for the good stories.
In General Tech I have:
The Daily WTF; programming idiocy, can be very funny, enlightening and often embarrassing (when you see something you've done in the past)
Slashdot
In PHP Development:
Planet PHP: I love good planets, they're really good at filtering just the good stuff on a subject.
Sitepoint.com (the php blog): Not much has come up here recently but when it does it's consistently good.
In Linux:
Linux.com: One of the most reliable sources for Linux related news on the internet (IMO)
LWN.net: Linux new aggregator, not quite as reliable but more prolific.
In General Web:
Geek Dinner London: Not really a blog as such, more an announcement channel for the geek dinner meetings in London
Microformats: News on developments in the field
(24)slash7: Very Rails oriented blog, I rarely read what comes up on in, I should really drop it.
css3.info: Exactly what it says on the tin.
Python:
unoficial python planet: An OK planet, but a little to prolific and not quite focused enough for my liking (no where near as good as planet php).
Django Community Planet: Django news
Food:
josephhall.com: Geek, cook, master of the ubuntu cookie!
Other Stuff:
No2id Events: the UK Campagin against ID Cards and the Database State
OhGizmo: gadget blog
Make Magazine: I don't read it often, but it's nice to have there for when I've got a few minutes free
Cool Hunting: design, culture, technology
Cute Overload: Cute stuff, overloaded!
Wow! More than I realised.