One could argue that the Spartans themselves tried to replicate the Spartan agoge in the 3rd century BC and in Roman times for the tourists; in the sense that what pop-culture, such as exemplified in the movie 300, understands as agoge is pretty close to what Spartan and Greek people of the times thought that Spartan training regimen was like in the 'good old times'.

I have talked about that before here.