I purchased 4 3-strip pkgs (with 2 BOGO coupons) of Fleischmann's yeast yesterday and received 4 catalinas for 50cents OYNO. The catalina does not give details of the promotion (dates, etc.), but these expire 12/30/08.

FYI: These yeast pkgs. are marked down to 1.69 at my store.
Also, the cashier told me that I would need to use each of these catalinas on separate transactions. The catalina itself does not specify "Limit one per customer or transaction", so it may be a YMMV situation, but my store is changing a lot of their coupon policies.