You will be able to find Evangelion Redeath, but not Redeath Redux, the updated one you saw. The difference is adjusted jokes, a bit of extension here and there, but mainly UNBELIEVABLY better sound. The girl who does Misato and Ritsuko are using the worst possible computer mics for their lines and are virtually inaudible.

With the exception of This Is Otakudom, STEAM, and that one leaked Redeath, Fanparodies are pretty coveted things. If you want STEAM or Otakudon, just search out the site and you can e-mail for a copy. You'll only have to provide payment for materials, since they won't profit off it. It was my 6th year, and I still go every time, even if I've seen it each time, it's still awesome. It's also fun to confuse first-timers I invite by knowing the timing and lines exactly...