To start with, an easy way to check what other people are following...
http://www.dreamwidth.org/syn/list.bmlAnd a few favourites of my own...
xkcd_feed: Just like everyone else, I need my XKCD.
yarn_harlot_feed: Really useful if you love knitting, and hilarious and wonderful even if you don't.
thesartorialist_feed: Cool clothes, even more interesting people. Every photo could spark a short story.
dreamwidth_alerts_feed: Find out what people are saying about Dreamwidth! All the meta meta your heart desires.
slacktivist_feed: Hilarious sporking of the "Left Behind" series, plus intelligent discussion of progressive theology and social justice issues.