Packet8, one of the big VOIP players, has released a new application for BlackBerry at CES. Personally there are quite a few others already doing this so I did not post about it earlier. The PR rep at the booth promised that the BlackBerry application will automatically recognize your international calls and send them through Packet8 without any call backs or call codes.
You get a free $2 credit of calls when you first sign up and after that their regular per minute fees start kicking in. The funny part is that even though their press release says there are no obligations or fees for the but it does mention that the service has a $9.99 activation fee. ($4.99 for current Packet8 customers) I am not quite sure how that will pan out in the long run.
I do know that for now you can signup for the fee free trial at this link: http://mobiletalk.packet8.net/trial
You can download the application by going to the following link from your BlackBerry: http://mobiletalk.packet8.net