analog integrated circuits

can anyone pls explain me wats the exact need for going to analog integrated circuits? Advantage of analog integrated circuit over the digital one?

tell me adout Analog VLSI

help me in understanding Analog VLSI (with the help of example) plzzz give me any EXAMPLE project on it

Regarding selecting my major ANALOG or DIGITAL DEG

I am doing my MS in vlsi and i have to select my major this fall.i am confused between analog and digital design.please suggest which one has more scope from the job point of view.And i have no particular inclination towards any of these. i am good at both but now i have to select one, only thing is that analog is bit more sifficult than digital in my univ but dats not the point. i am just looking for the one which can fetch me more calls. please suggest me in this coz i knw u guys knw more than i knw.