When you don't feel like doing any real work, you can procrastinate with Google Scholar Profiles. Either to find some papers from your favorite authors or just to update your profile.
Why and How to get a Google profile: http://scholar.google.com/intl/en/scholar/citations.html
Here is some examples of Google scholar profiles with lots of citations and papers:
http://scholar.google.com/citations?user=9fGrB0sAAAAJ&hl=en
http://scholar.google.com/citations?user=jHEgTSwAAAAJ&hl=en
http://scholar.google.com/citations?user=CeajmrUAAAAJ&hl=en
And some Medical Imaging Journals:
http://scholar.google.com/citations?hl=en&view_op=search_venues&vq=medical+imaging