As you can see from the above list, I have
trouble concentrating on a single research topic
:) It’s not ideal career-wise, but way more fun! Prior to joining Gary’s group, I worked on quite a variety of topics in fields ranging from plasma physics to amorphous solids; this is covered on my (out-of-date) website. My preferred approach to doing research is to first do simple simulations (the simpler and faster the better) and then use the results as an inspiration for an analytical theory. But it does not always work out that way, of course. Besides my own work, I enjoy helping others with their research. As a referee, I spend insane amounts of time reading and re-reading the manuscript, thinking about it, doing literature search etc., and I am very happy when the author thanks me for my suggestions and I feel that this is genuine and not just a way to get the manuscript published :) Yes, it hurts my own research sometimes, but so what? I learn new stuff and help someone in the process.
As a kid, I always wanted to be a scientist, but had trouble deciding what science to choose, as my interests were pretty broad. I think they have narrowed somewhat, but I still try to attend almost all seminars in the department and try to follow at least the most important developments outside my area of physics. Besides this, I enjoy reading Ukrainian news (I find Ukrainian politics much more entertaining than Canadian) and also try to bike to and from work and on weekends as a more fun way to stay fit (or at least not too fat) than a gym.