All month at Subway. http://www.subwayfreshbuzz.com/index.asp?rdr=PartnerSites:FebruANY:Subwaycom:W2:2011
For the month of Feburary all of their footlong subs are $5. Normally there are only about 4-5 that $5 and another 4-5 that are $6.50.
Thanks for the heads up. There are better sammiches out there, but not many for $5! That's two lunches unless I hog out...