Good translation resource. This page has input boxes for multiple different translation utilities around the web, so you can quickly check to see if they have the language(s) that you're looking for. It also has links to a couple neat "guess the language" resources, so you can paste in some text that you're not sure about, and it'll display a chart plotting the likelihood that it's one of several different possible languages.

For example, I found this site very useful when translating a page I found via a Copenhagen News site. I'd tried to translate the Copenhagen page from Danish to English with very little success, but after analyzing it, I learned that the language on the page was more likely in Swedish or Norwegian, so when I tried those translation utilities, I got a much more understandable output. Very useful stuff!