Screencast 5.1
www.youtube.com/watch?v=wemAaJXtJSI
This screencast walks you through the use of VSEPR theory to predict the shape of an SF4 molecule.

Screencast 5.2
www.youtube.com/watch?v=NsIKyocbqGw
This screencast walks you through the use of VSEPR theory to work out the shape of a POCl3 molecule.

Screencast 5.3
www.youtube.com/watch?v=JizlC8zGwOs
This screencast walks you through the bonding in a XeF2 molecule.

Screencast 5.4
www.youtube.com/watch?v=GD5CrjyAKx4
This screencast walks you through the bonding in a B2H6 molecule.