Mahamudra 1of 4: One Pointedness
http://www.youtube.com/watch?v=S_5TvB4lXfw&feature=related
Mahamudra 2 of 4: Simplicity
http://www.youtube.com/watch?v=IS4OhfixB5A&feature=related
Mahamudra 3 of 4: One Taste
http://www.youtube.com/watch?v=qubyTax1iF0&feature=related
Mahamudra 4 of 4: No Meditation
http://www.youtube.com/watch?v=63JUuxjbeRg&feature=related