Stewart closed his smackdown of Jim Cramer last week with a call to action for CNBC.

STEWART: So, maybe [CNBC] could remove the 'financial expert' and the 'in Cramer We Trust' and start getting back to fundamentals on the reporting as well and I can go back to making fart noises and funny faces.

CRAMER: I think we make that deal right here.

Cramer and Stewart shook on it and as much as I'd like to believe it's in CNBC's interest to deliver on that deal, we have to do what we can to hold them to it. That's exactly what PCCC is doing with the backing of an impressive array of progressive economicsts, journalists, bloggers and activists with their latest campaign: FixCNBC.

Sign the open letter to the network:

Dear CNBC --

   "You knew what the banks were doing, and yet were touting it for months and months. The entire network was." -- Jon Stewart

These now-legendary words were a wake-up call. We're asking you to wake up.

Americans need CNBC to do strong, watchdog journalism - asking tough questions to Wall Street, debunking lies, and reporting the truth. Instead, CNBC has done PR for Wall Street. You've been so obsessed with getting "access" to failed CEOs that you willfully passed on misinformation to the public for years, helping to get us into the economic crisis we face today.

You screwed up badly. Don't apologize - fix it!

CNBC should publicly declare that its new overriding mission will be responsible journalism that holds Wall Street accountable. As a down payment, we ask you to hire some new economic voices - people who have a track record of being right about the economic crisis and holding Wall Street executives' feet to the fire.

Please show us that you hear our voices loud and clear.

Once the number of signatures reaches 5,000 they'll deliver it to CNBC. They're already at 3,100 since this morning.

Add your name to the list and help finish what Stewart started.