You know what's interesting? Watching how television shows evolve over the years — both in terms of storylines and characters. Topics that were once taboo are now openly discussed in more current series, and characters we thought we'd never see as protagonists are front and center — including the TV mom. In early sitcoms and TV shows, the TV mom was always a supporting character, portrayed as a dutiful, flawless, smiling, loving housewife who basically lived in the kitchen. And then The…