What's interesting to me is drama and conflict. Things aren't interesting without conflict and resolution of conflict - or striving towards a resolutions of conflict.
Comedy is more difficult than drama. I think it's really difficult to make someone laugh because people have very different comedic sensibilities. In drama, you can get away with being a great actor and surrounded by great actors and having good writing. But in comedy you have to listen and you have to perform with a certain rhythm, because if you don't, it's like playing a wrong note in the orchestra and you can hear the off key and it will fall flat and you won't get that instant response.
Drama is the most difficult of all arts. In it two things are to be satisfied - first, the ears, and second, the eyes. To paint a scene, if one thing be painted, it is easy enough; but to paint different things and yet to keep up the central interest is very difficult. Another difficult thing is stage - management, that is, combining different things in such a manner as to keep the central interest intact.