I made a TV Guide style calendar grid for artists to list their streams over on Teamup. Bookmark it here! http://tinyurl.com/streamcalendar

This is both for regular-schedule streams and irregular streams, and it's not limited to art streams either; I've created categories for multiple different types of streams. Admittedly it's not much to look at, but it works and it doesn't have the same flaw as GooCal. I'm still searching for any unexpected bugs, so consider this still in beta for now. However, feel free to use it. :)

For regular viewers:
You can also export events to your Google Calendar or iCal by clicking on the event and going to the Export pull-down menu. All events are automatically converted by the calendar to your local time zone, so if you see a listing for 2pm, it's starting at 2pm YOUR time.

For folks who stream:
If you're interested in putting your listing up on the Streaming Calendar, e-mail me at jonasdrawing [at] gmail [dot] com and I'll give you modifier access. One little note, though: this is all honor-system-based. You're only to use it to put up your own stream listings. If I hear from anyone that their listing was removed, altered or vandalized by someone else, then I'm canning the whole thing. One strike and everyone's out, basically.

Note: for setting up a repeating event (for regularly scheduled streams), once you've made your event, click the More button, then check the Repeats checkbox and set up how often you'll be repeating your stream.

Note #2: When creating an event, set the starting/ending times for YOUR local time zone. It'll autoconvert it for viewers to their time zones.