I’ve added Sifr. I have to say I love it. It’s what drives the non-standard font headers. It uses Javascript, CSS, and Flash to replace text on the fly. It gives the page a more unique look, and it reduces the download profile.
On the con-side, it seems to need the browser to be refreshed to liquidly flow into to place. Other than that, though, I think I like it.
Drop me a line, tell me what you think.