I was going to use GAW and /or Soliek’s line, but I was not fast enough.
Ok, so I’ll go the serious route.
Ask, “Any progress on the XYZ project?” The answer will most likely be, “Uh, no not yet” (which means they forgot, or did not even start).
The next step is crucial. Say, “Is there anything I can do to help you move things along? I’m soon approaching the deadline (or whatever is an appropriate phrase to use, considering the job requested)
That way, it gives them an easy out, and you get to “remind” them without seeming pushy.
Vinnie. Hah!