Walnut Orb-weaver spider

Time for another arachnid. This little critter was found by the kids on our trampoline. (Not that we have kids living on our trampoline; or that the spider was bouncing on the trampoline.)
My arachnologist friend tells me it's Nuctenea umbratica (he actually told me it's Araneus umbraticus, but I see that taxonomy has moved on). The 'umbratica' bit refers to its tendency to hide in the shadows during the day. The dimples that are just visible on the abdomen are caused by muscle insertion points.
I'm trying to like spiders... but they still make me shudder slightly.