I also love french fries! However, I do not like potato chips much especially the ones bought at the supermarket because they are too artificial. I also love mojos. They are like fries, but thicker, yummier, and round. Mashed potato is okay though I do not like it when it's instant mashed potato.
I like a nice potato salad, but not the cold kind that is common in the States. Potato salad was originally intended to be consumed warm, it originated from Europe. I tried it once and it was pretty good.