Recent results from the JILA <sup>87</sup>Sr optical lattice clock are presented. Using the tight confinement of an optical lattice in
combination wit a sub-Hz linewidth diode laser we have achieved a pulse-length limited linewidth of 1.8 Hz for the <sup>1</sup>S<sub>0</sub>-
<sup>3</sup>P<sub>0</sub> clock transition. This corresponds to a quality factor of Q ≈ 2.4 x 10<sup>14</sup>, and is a record for coherent spectroscopy.
With the addition of a small magnetic bias field, the high line Q of the clock transition has also allowed us to resolve the
nuclear-spin sublevels, and make a precision measurement of the differential Landé g-factor between the <sup>1</sup>S<sub>0</sub> and <sup>3</sup>P<sub>0</sub>. We
present the current accuracy and stability of the lattice clock, and in addition, we report on our development of precision
tools for the lattice clock, including a stabilized clock laser, fs-comb based technology allowing accurate clock
comparison in both the microwave and optical domains, and clock transfer over an optical fiber in an urban environment.