I think it very instructive (and fun) to test students' knowledge of language in a broad sense.  I mean,  can they understand which language is being spoken when they hear one?  Do they recognize accents and where they originate from? 

I have created two games which do this sort of thing. 

1.Name The Languages

Simply listen and then decide which language is being spoken. All audio is from the Universal Declaration of the Rights Of Man. Play short or long versions.

2. Who Is Speaking?

Based on audio from the Speech Accent Archive, it presents an accent and asks students to guess who is speaking it and where it is from?  Deliberately provocative and aimed at getting students to think about their preconceived notions about language/identity and place. 

Enjoy using these two games with students, even if you just reference it as supplemental work for them.