Today's Groupon is $40 for $100 worth of custom framing at all 12 Big Picture Framing locations, including 1100 Mass. Ave. the 2044 Mass. Ave. store near Porter Square.  They have been recommended here as perhaps the best framers to work with in the local area.  The Groupon is good for six months.

Note that Big Picture Framing also has a 50% off sale that runs for the entire month of November.  The Groupon can't be combined with the sale, but is a bigger discount for orders of $120 or less (plus it's good into May 2011).

Here's the link, which includes a referral code (thanks!):
http://www.groupon.com/r/uu39973