PR-INSIDE, or as I believe they used to be, PR NEWSWIRE, will run
anything. If you wanted to put on a BOFH hat you could probably get a
fake press release on there about your family pet dying.
There's room for some "fun" original/investigative reporting in there.
You could set up a spoof company, run some releases through them, then
talk to business news editors at a few papers (some like this outfit
advertise they get your PR to these people) and find out what happens to
unsolicited emails from such services.