If you are using Safari and the SuperTab video won't play, you can try the following:

1) In Safari, click SafariPreferences...

2) Click Click PrivacyManage Website Data
3) Scroll to youtube.com or use the search box to find it

4) Select youtube.com and click Remove → Done

5) Quit Safari

6) Re-open Safari and the video should now play.

View on YouTube

If all else fails, you can simply watch the video on YouTube.