When Apple introduced its @font-face support in Safari 3.1 in March 2008 it caused heated debates in the type industry, because in order to embed a TrueType or OpenType font in a website, the fonts need to be uploaded to a public server, free for everyone to be downloaded. But the users keep requesting the use of commercial fonts on websites.
Now more and more commercial font foundries have overcome their shock and have announced to support @font-face embedding for their fonts. Most notably, David Berlow of the Font Bureau has just announced that their fonts will soon be available for @font-face embedding. Font Bureau introduces a new permission table included in the fonts, but this table is currently not technically enforced in any way, so there are no limitations like the URL-binding feature of the EOT format.
I am keeping track of foundries supporting @font-face embedding on this Webfonts.info Wiki page.