A quick post to say how much we love these little things. Since we discovered them, we've installed them in every apartment we have lived in.
Particularly if you liked Aaron's wax paper tip yesterday but are willing to spend more...
Rolling shower curtain hooks (@ $11 for 12) can be found at most hardware and home stores and have the dubious distinction of making it incredibly easy (almost luxurious) to open and close your shower curtain.
They also add a little sparkle of chrome to any drab little bathroom.
(ReEdited from 2005-09-13 - MGR)