Checking adsense in other countries

[skuba]

I forgot, but I believe it was discussed here before a way to check what ads are coming up in other countries.
For example, my site is on portuguese, so I would like to check what ads are showing up in brazil, but I am in the US.

How could I do that?

Thanks

[Jenstar]

AdSense Preview Tool:
[google.com...]

[bts111]

Have I been in a cave?

How long has the preview tool been available for?

[Jenstar]

Since June 2004 ;)