Well...let's see...
reviewing pathology reports from the OR
calling patients with above
returning calls from patients
reviewing radiological studies ordered on patients
calling patients with above
rounding on patients
checking up on residents; making sure they are telling him/her the truth about patient lab results, etc.
entering stealth labs into electronic ordering system which the residents will get called about
seeing patients and telling them "X" but telling residents "Y" to mess with resident's mind
preparing talks to give to students, other disciplines (although this generally only needs to be updated from year to year)
reading current literature in specialty
perhaps writing chapter in book in specialty
writing letters of recommendation for students and residents applying for jobs or fellowships
attending conferences, faculty meetings
fielding phone calls from nurses complaining about residents
fielding phone calls from residents complaining about nurses
working on call schedule for service (at some places)
dictating records, OR reports, clinic visits
staying in clinic - is your surgery clinic really over at 4 pm? I've never heard of such a thing!
discussing interesting cases with colleagues, getting advice, input about management
checking out current application pool for "hot chicks/dudes" 😉
reading latest DuPont for dream car stats