Typekit is liveNOV 10 2009

Typekit launched today (details here).

This will change the way you design websites. Add a line of code to your pages and choose from hundreds of fonts. Simple, bulletproof, standards compliant, accessible, and totally legal.

I haven't had a chance to play around with this yet, but hope to soon. And hey, you can use Silkscreen with Typekit.