How about Klingon?

The Chronicle of Higher Education found it necessary to add this caveat to the instructions for their upcoming online chat on Tolkien Scholarship:

Questions and comments about the legacy of Tolkien and the world of Tolkien scholarship are welcome. We would prefer, however, that you not submit them in Elvish, Dwarvish, Entish, Orcish, or any other imaginary language.

Found via MaudNewton.com