Cold and foggy Frisco, beautiful and scenic and in my opinion the freakiest city in North America. Not as ethnically diverse as Toronto or NYC, but sexually, politically, financially diverse.
Ferraris, Hippies, Homeless, Dot-Commers, Dot-Bummers(unemployed dot-commers), Crack whores, Yuppies, Replubicans, Art Car fanatics, FOBs, New Age 420 lovers, George Lucas or Steve Jobs slaves, Families(gasp). Anything goes, except if you can't afford housing sorry you have to sell E to ravers or move out of the city.
The Bay Area is a motorcyclist's dream. Weather is consistent all year around - high teens - great for riding. It's also fully of surprises, due to the varying micro-climates. One area maybe completely under fog and another 10-20 miles away is 10-20 degrees warmer and sunny.