Ben is a retired chemistry professor who likes his quiet comfortable life of eating, drinking and reading newspapers. To make him responsive, you will have to bother him long enough that he will fold his newspaper. Then you can talk to him, poke or tickle him or even have a telephone conversation with him.
If you get Ben to his laboratory however, he becomes as happy as a puppy. There you can do chemistry experiments by mixing a combination of two test tubes together and see the hilarious reactions.