My list varies depending on the time of day, and which computer I'm using, but it's generally a fairly small corner of the news universe...

Most sites I only skim, and some I don't look at for days on end.

Here
NY Times
Krugman's blog
Balloon-Juice
AngryBlackLady
Google News
Brad DeLong's blog
Daily Kos
TBogg
DangerRoom at Wired
Pharyngula
BBC News
MacRumors
Booman Tribune
Pandagon
BlueVirginia.US

Others I frequent, usually daily, include:

WashingtonMonthly
Google Finance
James Fallows and TNC's blogs at The Atlantic
Kevin Drum's blog at MotherJones
CalculatedRisk

I used to keep a tab for Memeorandum, but it got to be too annoying.

HTH a little.

Cheers,
Scott.