Sure it's not. Not yet. But I think they're some exciting alternatives brewing. Check out Glancing Pad: http://yanooshray.googlepages.com

It's basically a pad that detects movement. You can use it as a keyboard and mouse at the same time. And, although he doesn't say it, I think you can modify it to key-chord so that you're not just inputting letters, but full words, expressions and commands.