The new Vonage/UTStarcom phone is interesting. It actually looks like something we could consider giving executives (actually this could be very big for telecommuters -- current solutions like software phones are awkward at best).
My big worry is how it works with "non-open" wireless points. Probably supports WEP and encryption. But how does it work for the Hampton Inn style one-time password situation (password is on the keycard jacket when you check in)?
Also, there is a clear market for a more advanced home router that would allow you to segment traffic. It would offer unencrypted public access (with logging) but not to the "private"=wired part of the network. If you need the private part, use VPN. I would be more than happy to share my logged access point with the world if I didn't have to totally revamp my open shares.