This week, you can find, watch and/or subscribe to "vidcasts" (look for the link in the "what we like section") from the Consumer Electronic Show.
You can also listen to press briefings as podcasts from CES.
Niall Kennedy writes:
Videos can be played inside your browser window using either Windows Media 9, RealPlayer 10, or QuickTime 7 players configured through a Yahoo cookie.
Last month, Blinkx.tv added an option to download vlogs and other consumer video content to portable video players and computers.
Postscript: Yahoo CEO Terry Semel's keynote at CES on Friday will be available as a vidcast or podcast. Details here.