Here are the videos:

File Setup, Creating Basic Curves
http://www.youtube.com/watch?v=dBU1Es1Y6Eo (The video's owner prevents external embedding)

Explicit, single-rail sweeps. Intro to “spines”.
http://www.youtube.com/watch?v=3DNYCuFYDCA (The video's owner prevents external embedding)

Explicit, bi-rail sweeps.
http://www.youtube.com/watch?v=sFNIzKULFS0 (The video's owner prevents external embedding)

Linear Sweeps: Two Limits
http://www.youtube.com/watch?v=0lY3Lgm-fXI (The video's owner prevents external embedding)

Linear Sweeps: With Draft Direction
http://www.youtube.com/watch?v=Q4Fyg1_yAKw (The video's owner prevents external embedding)

Intro to “Laws” and “Reference Surfaces”
http://www.youtube.com/watch?v=59pssR-utqY (The video's owner prevents external embedding)

Linear Sweep with Reference Surface
http://www.youtube.com/watch?v=LXO6aR7-xnY (The video's owner prevents external embedding)

Circular Sweep with Center and Radius (including Laws)
http://www.youtube.com/watch?v=csHYO89zXDU (The video's owner prevents external embedding)

Linear Sweep with Tangency Surface
http://www.youtube.com/watch?v=fLhAf1dK_P4 (The video's owner prevents external embedding)

Circular Sweep with Center and Two Angles
http://www.youtube.com/watch?v=fLhAf1dK_P4 (The video's owner prevents external embedding)

Circular Sweep with Two Guides and a Radius (including Laws)
http://www.youtube.com/watch?v=_39M1Q6CJgY (The video's owner prevents external embedding)

Circular Sweep with Two Guides and a Tangency Surface (includes ‘insert mode’ and ‘replace’ functions)
http://www.youtube.com/watch?v=e0_bM34Nj8o (The video's owner prevents external embedding)

Circular Sweep with Three Guides (special methodology using a parametric bisector and normal translation)

<a href="http://www.youtube.com/watch?v=nffXx8mmOaw" target="_blank" class="aeva_link bbc_link new_win">http://www.youtube.com/watch?v=nffXx8mmOaw</a>

Conic Sweeps

<a href="http://www.youtube.com/watch?v=RiFLxDMXa6g" target="_blank" class="aeva_link bbc_link new_win">http://www.youtube.com/watch?v=RiFLxDMXa6g</a>