Something that EVERYONE should get! Correction: Must get!
Skype rocks! You can make PC-to-PC calls to any Skype user, as well as on normal telephones (...for which you need to buy a calling card though). Talked to Saahil all afternoon, and then to Arvind (...though there, only I talked, since the idiot doesn't have a mic!) :) And, it's so awesomely crystal clear!! YAY!!
My name on Skype is "aanchaltyagi". Add me as soon as you get it.
You can download Skype from here.