EDMEVMEDIA is documenting the conversion of a Mazda Miata and usually updates their progress every couple of days. Their videos have covered everything from bottom balancing their cells to making mounting brackets, installing components, and running wiring.
JDDCIRCUIT is documenting the development of soft and hard ware to run a Prius electric motor and install it in an MR2. This work is major as the Prius drivetrains are readily available and from the videos, it appears the half shafts are the same on the Prius and MR2, making for an easy drivetrain conversion.
If you are converting a car or plan to in the future, these active build videos will prove very useful for you. I encourage you to show support and add their Youtube sites to your favorite list.