Try
SearchCraigs.com
You can just go to the site and type in "telecommuting is ok" and it will pull up all work at home jobs in all cities and categories. Or you can specify a city or category.
F.Y.I...
It's my site I just built. But it is working great. And there are no ads on it or mess. Just a plain search page, like google. I'm still adding cities for individual searches. But the search all is already finished.