If you want to see some good footage of Yukon moose and calling sequences, the DVD I would recommend is Rackman #4 In Search of the Giants.
Rackman #5 is also good, just #4 is a bit better.
Every year on this forum, guys ask for calling tips; well watch this DVD and you'll see how it's done.
If you check out the guys website, he has a few other DVDs and CDs. I don't know how good they are (they are in French).