The May 2007 issue of Real Simple has featured the OXO Good Grips sink strainer as their featured "Product of the Month." What makes this strainer so great is that the center is actually made of long-lasting silicone. It simply inverts and allows any icky gunk stuck to it to easily come out. It fits most standard sink drains and is $7. Available here.
OXO products have been a favorite of AT since the beginning. Check out ATNY's review of these OXO products here, here, here, and this one from Kitchen. Do any of you use this sink drainer? What is your review?