Did you ever needed to show a content of a PDF file in your Joomla page? No, I don't mean link it to be downloadable, but actually show it!
Until recently the only way to do it was DocMan, with a specialized plugin capable to show preview of the PDF files available for download. Was a solution... but to show one or two files was an overkill. Recently I had this problem again, and invested a serious amount of time to find this marvel: