Not a joke, not a scam, just a way to raise money for a good cause! From the youtube page:
Do the BiG Blue Test, on World Diabetes Day http://BigBlueTest.org is a program of the Diabetes Hands Foundation (DHF). It takes place every November 14 (World Diabetes Day. People with diabetes are invited to test their blood sugar at 2 pm (local time), do 14 minutes of activity, test again and share the results. Nov. 14, 2010, DHF is aiming for a minimum of 100,000 views of its Big Blue Test promotional video. To help the foundation reach this goal, Roche Diabetes Care (makers of ACCU-CHEK® diabetes products and services), has underwritten the production of this video and will make a donation for every view the video receives up to $75,000. DHF will use the donation to help the Life for a Child program, run by the International Diabetes Federation, and Insulin For Life. These two global, humanitarian organizations provide diabetes medication and supplies to children in the world’s poorest countries.