I bought the magnesium flint striker at Wal-Mart (sporting/camping section). They aren't very exotic items. They're pretty cheap too (about $6 if I can remember correctly, but I could be horribly off).
I notice that in the beginning, I say "um" a lot. This was my first instructional video, and I now realize that it is harder to speak in front of a camera than I thought. I'm hoping that some more practice should clear that right up though.
P.S. Les Stroud (from Survivorman) actually recommends that a roughly nickel-sized pile of magnesium is sufficient, not that it makes much difference.
