Drew and I put together an exercise video that is now posted to YouTube. Now, don't get any ideas of seeing me in a leotard and leg warmers (My God would that be awful).
The video in question is an Tonguing Exercise (again, refrain from allowing your sick imagination too much license) that is used for tin whistle playing. If you're keeping up with the series, this video should be of help to you!
Learn to Play the Tin Whistle
(the best part of this is that it is free!)