Sikkimese is a Southern Tibetan language spoken by the Bhutia (Denzongpa) people in Sikkim. It is also known as Sikkimese Tibetan, Bhutia, Dranjongke (འབྲས་ལྗོངས་སྐད་), Dranjoke, Denjongka, Denzongpeke or Denzongke, and has about 70,300 speakers
Sikkimese is closely related Dzongkha and there is some mutual intelligibility between them. It is less closely related to Tibetan, though many Sikkimese speakers also speak Tibetan, as well as Nepali.
Sikkimese is written with the Tibetan alphabet and about two thirds of Sikkimese speakers are literate in their language.
Information about the Sikkimese
http://en.wikipedia.org/wiki/Sikkimese_language
http://www.indianetzone.com/56/sikkimese_language_india.htm
http://www.thlib.org/static/reprints/bot/bot_1995_01_24.pdf
Videos featuring spoken Sikkimese
http://www.youtube.com/watch?v=UOYge0O9MtY
http://www.youtube.com/watch?v=NhH63Q1AjUg
Burmese, Dzongkha, Garo, Kayah Li, Lepcha, Limbu, Lisu, Manipuri, Mizo, Naxi, Nepal Bhasa / Newari, Sunuwar, Tangut, Tibetan, Tujia, Yi