Not only can you check your Google web search rankings in any country, you can now check your rankings for image search, news search, video search and group search on any Google data center.
A new tool at http://oy-oy.eu/google/trydc/dc.aspx has a method for you to plug in a query URL at Google.com and hit submit, after specifying a Google data center.
Softplus, at Cre8asite Forums, who designed the tool said;
You can specify any C-Class datacenter (or all of them) and run a Google-query of your choice on it. It sends it through my server (so you'll have Swiss geotargeting) directly to that datacenter and returns the results just slightly adjusted (so that the links work and the images are displayed, optionally with the javascript removed). It won't give you any "secret information", but if you stumble upon a query that brings unexpected results, you can work out which datacenter it is and let other people use that datacenter directly (this is especially the case with image-search, though I have seen differences in video, news, froogle and even groups as well).
Forum discussion at Cre8asite Forums.