I think you can go a little further than that.
Culture comes and goes, but nostalgia is a constant. And, in many cases, self-perpetuating.
For instance, the comic strip "Flash Gordon" debuted in 1934; that created the serials of the thirties through 1940. 14 years later, nostalgia brought Flash back in a TV series during the first wave of space TV (Space Patrol, Rocky Jones, Tom Corbett). 24 years after that, up came Filmation's cartoon, followed immediately by the high-camp film with Max Von Sydow.
Again in 1986. Again in 1996. Again in 2007.
We could do the same with Buck Rogers, whose
latest incarnation is due to hit the big screen in 2011.
Arguably, Trek has left a bigger cultural footprint than either of the two. So, with both of these pre-WWII franchises still spinning eighty years on, Trek may yet to even hit its "Middle Age."