Recently Radigan mentioned things he'd like to see on the Internet. I'd watch all three of those ideas. In response I'd figure I'd whip up some things I do watch on the Internet that's out there now. There's actually a fair amount of video content online, this is just the bit I know about, and am most of which, I'm subscribed to.
On the tech side of things, there's DL.TV (twice a week; Tuesdays and Thursdays, which I watch on a regular basis), and Crankygeeks (once a week: Wednesdays, which I watch from time to time). Both productions of Ziff-Davis, and both essentially just tech news. Crankygeeks can sometimes be funny, as it's full of curmudgeons, or merely inane.
For more tech news, there's Diggnation (Thursdays). Featuring Alex Albrecht and Kevin Rose, they're pretty much the Wayne Campbell and Garth Algar of the internet era. It's a low budget show of the two of them sitting on their couch, drinking beer, and reading Digg news while they talk into their laptops. The show itself can be fairly funny, because the two of them are pretty funny together. However, the content, top stories posted to digg is just filler (mainly because I don't like what ends up getting to the top of the digg pile, it's usually just asinine). But, it's still probably the most popular video podcast.
Revision3 are the makers of Digg. They do a lot of video, actually. A lot of the same stuff. inDigital (which currently seems to be dead) more gadgetry (with Wil Wheaton!), is nothing spectacular, but decent gadget review show I watch from time to time when I feel the urge for gadget porn.
But I do really enjoy one Revision3 show: Ctrl-Alt-Chicken (irregular releases). It's a cooking show. Well, it's a funny show, that just happens to have cooking in it. The two hosts don't claim to have any sort of cooking knowledge, but they'll walk through a recipe in an fairly entertaining way. It may or may not actually work out to something edible.
I should also mention NerdTV. It's PBS's Robert X. Cringely doing in depth interviews with some of the most interesting people in computing. Though, sadly season one has ended, and season two has still yet to begin.
On the more comedic side of things, there is some really great stuff.
You all probably know of Homestar Runner. It could really be considered a forerunner of regularly released video content on the Internet. And, interestingly enough, it seemed to do whatever it wanted to do. It reached a large audience and sold a lot of merchandise without having to get any distribution deals. It was just put up to be viewed, and downloaded. Recently, they've started to offer downloadable video versions of their things to watch, all conveniently wrapped inside a RSS feed.
I'd also really recommend watching Ask A Ninja (releases every week or two). It's absolutely hilarious. An unnamed ninja answers one email per episode in an exaggerated manner. It's short, non-sequitur answers to daily ninja life. It has a distinct up close view with very short edits. "Every time we shoot one of these episodes, I've got 14, 15 ninjas that try and kill me while we're shooting! Thank goodness for Final Kill Pro. ... If I didn't edit that stuff out, it would just be a bunch of blinding extraordinary fight sequences, and nobody wants to see that."
I also watch Tiki Bar TV (more or less monthly). All about the perils of being in a Tiki-themed bar that's stuck in the 1950's. It is made of pure science and drinking. More hilarity.
And if you have more things that you watch online, but I didn't mention, comment them!
