That is MD500E operated by Lakelse Air in Terrace, British Columbia, Canada.
http://www.lakelseair.bc.ca/
The 500 is a favoured aircraft in the mining industry as it is fast and fits into small areas and is very stable while passengers exit in the hover, such as on cliffs or mountain ridges. As you can see, it is hard not to have fun flying a "Ferrari" like that.
I worked for Canadian in the same town for a number of years. Back when flying was fun.
CDN RH