Endless streets

In my "what i love list" about San Francisco, I would have to put the long endless streets. Most of them come across a hill which doesn't make them seem so endless... but still I love riding the bus or driving on them, going from one neighborhood to another, seeing the styles change from one STOP to another.

Van Ness, Fillmore, Divisadero, Hyde, Mission, 19th ave, Market, Noriega, Geary...