First thing that came to mind was gnocchi. I don't eat it all the time because I want to eat waaaaay too much of it. Best I ever had was at a little place in Rome.
Vodka...yes, not all is made from potatoes but some is. One of my absolute (no pun there) favorite things is an extra dirty (like...absolutely filthy) vodka martini. So, I must thank the humble potato even though not all vodka is potato vodka.
Latkes - Yes, I know people make ones solely with zucchini, carrots, and/or sweet potatoes but I'm a traditionalist and like mine from russets. YUM!