Probably the language groups that have the most trouble with English are those in Asia. When people over there translate important information for English-speaking tourists, it can be a challenge, and some of those challenges are showcased at Engrish.com, one of websites I visit when I need a good chuckle. Here are just a few that have given me a giggle lately:
Be sure to look around, especially at the Popular Engrish link.
What favorite websites do you have?