Each of us probably has one particular plant which generates lots of "What is that?" sort of questions. In my own garden, it is the Sylphium, which is blooming it's heart out at the moment. It looks like a bright yellow daisy on steroids, since it is a solid eight feet tall and about five feet across. Most often I'm asked, "What is that bush?" and the person is always surprised to discover it's an herbaceous perennial that disappears every winter.
One of my suppliers was getting a gazillion questions about the shrubs at their entrance. I thought their means of response was quite clever!