BlogsNow: most linked to in 14,440,991 weblogs.
via [ Rocketboom's Online Video Tools Link List ] which doesn't have these links:
Vlog Soup - Vlogosphere tours start here
FeeVlog - Paid vlogging solutions and some free ones too.
vblogcentral - Video hosting and encoding.
Brightcove - Open Internet TV service for video producers and programmers.
audioblog - Audio and Video Podcast publishing service.