I'm not an academic, and I understand by osmosis that organized science has many problems related to publishing and connected mechanisms, but I have to say there's been quite a few moments in my life and career when I found the inspiration or solution I needed in a good paper.

For condensed knowledge on highly specific topics (i.e. more specific than is economical in book form) I often know nothing better.

Most recently I did sort of a self-taught crash course in ground-penetrating radar and applications for an archeological endeavour I write software for, and a number of papers have been really invaluable.

Alan Sokal style hoax is what comes to mind first, of course. Wouldn't be the first computer-generated hoax either (see SCIgen). However see also the P.P.P.P.S. in the article, his co-author denies that in the comments.