Don't mind if I do, thank you :-)

11 Obscure but Cool Languages You Should Learn, and How to Do It

Cornish
Catalan
Breton
Xhosa
Belarusian
Tibetan
Basque
Leonese
Maltese
Hawaiian
Occitan

Breton, Xhosa, Basque, Leonese, Maltese, and Occitan are already on my to learn list :-D