Paint, among other things. I can walk in to a hobby store, and eyeball color selections of (hopefully) multiple brands.
Visual effect. I can read lists until my eyes bleed, but there is little substitute for seeing the new kit selection right in front of me. We have discussed the effect of model box art before, and many on-line vendors cannot afford graphics. So a nod goes to the visual effect of hobby shops.
Memory. As in "I have little". So for me to see what is new, or even just in stock, is a big plus.