I got this recommendation from a government email and want to share with you all. From now till 30 Sept 2009, sign up for Mediaring Talk and call the following countries for free!

1. Fixed (landline) & Mobile: US, Canada, China, Singapore, Hong Kong
   
   
2. Fixed (landline) only: United Kingdom, Taiwan and Australia

The catch? Each call is limited to 10 mins. But you can call and say Hi at no cost! Better than nothing right? Plus you can make multiple calls. I tried it out. The connection is quick and the sound quality is excellent.