Many of the sites with great content that we read about everyday on the net are not available for users outside US. Why is that? The short answer: licensing constraints. These sites are allowed to distribute their content only to American citizens. There are plenty of examples: Hulu, NBC, Fox, etc.
The good news is that some of these sites can be unlocked for the users that live or travel outside US. Let’s take a look now to Pandora, the well-known Internet Radio. If you try to access Pandora from Europe, for example, you get the following message:

How To Unlock Pandora
The solution is very simple: change your IP to a US IP address and you are in! Pandora is not as advanced as Hulu that is able to detect proxies and blocks IPs used by the most common hide IP applications, so you won’t have problems in finding a working solution.
I have compiled a list of 13 of the best tools that are able to make Pandora available anywhere in the world. Firstly you’ll have to change the IP address with one of the products and than access Pandora. It should work smoothly.
Hide IP Desktop Applications
1. Ultrasurf
2. NotMyIP
3. Tor
4. Hide My IP
5. Invisible Browsing
6. Hide The IP
7. IP Privacy
VPN Services
8. Hotspot Shield
9. IAPS Security Services
10. StrongVPN
11. HideMyAss
Firefox Add-ons
12. SwitchProxy
13. FoxyProxy
Enjoy!
Update 9/14/2009: A new free tool to get a US IP address is available – HideIPVPN.
Update 2/8/2010: InvisibleBrowsingVPN is also a good solution to access Pandora.
[Pandora]

4 Comments
Those VPN service providers you mentioned are ridiculously overpriced. I ended up going with http://www.hidemynet.com and paying 4.15$ per month when i pre-payed for 1 year.
The other desktop/proxy free services you mentioned are easily blocked. I ran into this problem with hulu, its best to just stick with a VPN.
I’m using Strong VPN and I’d suggest http://www.vpntelevision.com at $55 a year – get a US or UK IP address – high speed and easy to configure.
Abe
I use a vpn that i had found
http://pandoraoutusa.blogspot.com
it gives you 6 US private ip and other various ip from many countries in only one account
Really it resolved me the problem of territory restrictions.
@poli –
Sorry, the site is
http://pandoraoutus.blogspot.com
or
http://panadoraoutus.co.cc
Nice day