Show Widget Across All Blogs

Hi, it would be really nice if there was a plugin out there that would allow you to check a box for each Widget if you want it to show on your pages across all blogs. Ex. I have a main site that I will put all of my widgets on and on my other blogs I don't want to configure them again - just have them be the same as the main blog. That way I don't have to go across all blogs and update them when I update the "Main" blog widgets. I don't think there is anything out there that does that, if so please advise.