Long before Arnab Goswami screamed his opinion on Republic TV, long before cricketers such as Dhoni and Tendulkar touted myriad products on TV, long before another mother-in-law and daughter-in-law duo sparred on yet another teary soap-opera spinoff and if you can dare imagine, long before the dirge that served as Doordarshan’s signature tune ushered in the day’s program with an…