-Corny sense of humour (really, he tells the cheesiest jokes I have ever heard in my life). There's this one he told quite a few times these past couple years about a little boy who went to a wedding that's really chuckle-worthy.
-His stories about his childhood.
-He's pretty prescriptivist in his language. It's easy to appreciate grammar and proper language when you're exposed to it regularly.
-Rhetoric. I always think of him when I think of people who know how to use their words effectively.
-His love of dogs. Mom says that he used to always say that, if you want to know how dogs should be treated, you should spell "dog" backward.
-His can-do attitude. One's limitations were usually self-imposed. It's a pretty rare attitude for his generation, from what I've seen.
-His devotion to his wife and family.
-I saw a picture of my grandparents at my parents' wedding, and Grandpa Hayman was so cute. I love pictures of him when he was younger.
-Stories about his side of the family are always great. Always. They were a bunch of true characters, Grandpa included. And Grandpa always told good stories (while his memory persevered).
-He traveled around the world, stepped on every continent, and drove on each one as well. He had visited over 100 countries (Grandma and Grandpa used to be in the Traveler's Century Club, until they stopped paying dues, I believe). How awesome is that? I hope someday to do even a fourth of the traveling he did.