After I realized that everyone and their grandmother (at least outside the US) uses Skype, I finally downloaded it as well.
Skyping out to India is actually cheaper than my calling cards. I don't have to punch in three series of numbers, and the quality is excellent.
Of course, Skyping computer to computer is free. And some college buds across the globe have it on all the time: I've talked with Kem and his wife in Guangzhou on several occasions, and R in Adelaide (apparently it can work when he's on the rigs in Angola as well).
So -- anyone else on Skype? Yours truly is at gashwingomes.