Never Get a Refund Check, The IRS (Kind of) Looking For You
Turns out mailing address errors or incorrect addresses made approximately 383,000 of last year's refund checks undeliverable. While the IRS isn't actually actively seeking out people who's checks were returned, you can still claim your check until Nov 28, 2008. If you haven't received a check go to www.irs.gov or call 866-234-2942 or you will likely miss out on your chance.
Link: WSJ - The IRS Wants to Give You Cash
Image: sekimura @ Flickr