[dimdimdim]

The one I've used for 3 years counting:

http://pentesteracademy.com/topics

Its the Pluralsight / Lynda.com but for Computer Security.

[kkirsche]

Looks cool. Wish you didn't have to pay $100 each time you restarted and the PayPal and email cancelation is not anything I would trust sadly. Just seems to risky for a "well we didn't get your cancelation, sorry" situation.