Complex Analysis

Elias Stein wrote a series of wonderful books on analysis, the Princeton lectures in analysis. I read the first book, on Fourier analysis, in the spring, and I'm currently reading the second, on complex analysis. Complex analysis is fun! It feels as remarkable as learning calculus for the first time did. It's really hard to imagine that the simple condition of holomorphicity could produce such an enormous number of totally nonobvious results. Granted, holomorphicity is a strong condition, but it seems like such a simple one to have so many interesting consequences. It has rekindled my interest in analysis.