Since the year 2000, our institutions have been engaged in a study of the nearby dwarf and giant stars earlier than spectral type M0 in the Hipparcos catalog and within 40 parsecs of the Sun. This study has used classification-resolution spectra to provide new, precise spectral types and basic physical parameters (effective temperature, surface gravity and metallicity) for these stars. In addition, we are providing measures of the chromospheric activity for these stars. Results so far have been published in Gray et al. (2003, 2006). In this poster, we discuss the solar-twin/solar analogue candidates we have found in our sample, and comment on the interesting diversity we have found in the expression of chromospheric activity in active G and K dwarfs.