I found this interesting: David Gorski at Science-Based Medicine discussing a study examining doctors' attitudes to drug company-funded studies.

Shock horror, doctors would seem to regard industry funding of studies as a negative factor, and view the results accordingly.

As Gorski points out, it might be that this impression is somewhat excessive, and not (always) warranted… It rather hurts the caricature of us as mindless Pharma drones though.