Vinay Pathak and Ranvir Shourie are names synonymous with comedy. However, one man that often brings out the best in these funnymen is Shashant Singh. Shashant, who directed <em> The Great Indian Comedy Show</em>, has now joined hands with Vinay Pathak to form a production company, Lemon Tea. And come this Monday, it will be served hot in the form of<em> Ranvir, Vinay aur kaun?</em> (RVK) - a new interview based weekly sitcom on Star One at 10.p.m.