Save Chuck, a really good PR Stunt?

I love Chuck on NBC.  It’s a fun, smart show filled with action, romance, comedy, drama…it’s something for everyone.  All over the twitterverse was buzz about Chuck possibly getting canceled and the movement to prevent it’s demise.  

Basically, according to this website we are to show our support for Chuck by consuming.  One of the things that we must specifically consume is the Subway $5 footlong which was shamelessly product placed in the show last week.  This all just seems like a PR stunt from Subway to me.  Thoughts?