Are we saying DSN was influential in terms of, permeating popular culture? Or in terms of the effect its storytelling techniques and themes influenced later TV shows?
A number of DSN writers have gone on to very successful later careers -- Ronald D. Moore with Carnivale
, Ira Steven Behr on The 4400
, Bryan Fuller on Pushing Daisies
. So a case could be made that DSN was most influential in that sense.