In video 2 of 6, we ask Vitalik how and why we should in Ethereum and how the ethers (currency used in the Ethereum network) will be distributed:

http://prisonorfreedom.com/how-why-you-should-invest-in-ethereum/

We pretty much ask all the "investing" related questions that you would want to ask before pouring money into Ethereum.

Enjoy!
Tai Zen