(CNN) -- "Saturday Night Live" was formed in the crucible of the mid-1970s, when Watergate brought respect for politicians to all-time lows, the counterculture was taking over comedy, and many television viewers were seeking out something fresh and bold. Fred Armisen played Barack Obama in a talked-about sketch Saturday night on "Saturday Night Live." It was a powerful combination -- and after 34 years, the combination of "SNL" and politics can still strike sparks among political observers. The most recent example came this past weekend when Fred Armisen, as President Obama, chided "those on the right" for saying that he...