Still a massive influence today on contemporary 'documentary style' work (his term) and social/cultural landscape.
He pretty much created that ubiquitous visual vocabulary that we've all used at some point; telephone wires and utility poles as formal devices, billboards and advertisements as both graphical and cultural statements, shop fronts and cars as historical anchor points. While Ansel Adams was battling with the concept of 'straight photography', Evans was actually out doing it.
Along with Paul Strand, he's one of the few historical photographers whose work gives me that 'wholesome' feeling. It's like eating a completely satisfying meal.