NBC audiences will be seeing second seasons from The Marriage Ref, Who Do You Think You Are? and Minute to Win It in 2010-11 following an announcement by NBC and Universal Media Studios. The network is picking up The Marriage Ref, from Jerry Seinfeld’s Columbus 81 Productions and Ellen Rakieten Entertainment, which has over-delivered in key upscale demos. The competition series Minute to Win It is hosted by Food Network personality Guy Fieri, and produced by Universal Media Studios with Friday TV. Who Do You Think You Are?, the celebrity genealogy series, is produced by Wall to Wall Productions (a Shed Media company) in association with Is Or Isn’t Entertainment.