Bicycle Tutor has useful bike maintenance videos.
Cycle Chic offers smart accessories for women.
Sheldon Brown is a cycling encyclopedia.
Warrington Cycle Campaign. I like its deadpan captions.
Barry Meehan offers Qik clips from his handlebars.
Live Strong with Lance Amstrong and unexpectedly entertaining guests.
The Guardian has a bike blog and a monthly podcast.
Copenhagenize is one of the best blogs on bike culture.
NYC cyclists have a cynical and sharp-witted account of cycling in Manhattan.