I've written about Adhearsion before and while I don't do much with Ruby myself, the power of Adhearsion to create powerful telephony apps in a few lines of code is pretty amazing.
If you'd like to join the VUC call live tomorrow, the info is:
- SIP: firstname.lastname@example.org (works with wideband!)
- Skype: vuc.me
- Regular old PSTN phone: +15672522286
There's also a very active IRC backchannel (#vuc on free node) that provides another way to communicate during the call.