The Super-Kamiokande (SK) water Cherenkov detector has been operating for nearly 12 years collecting data for the study of both solar and atmospheric neutrinos as well as searching for neutrinos from supernovae (and relic supernovae) and for nucleon decay. The experiment has undergone three operating phases during the full running period: SK-I (40% photocathode coverage), SK-II (20% coverage), and SK-III (40% coverage). Soon, the experiment will move into its fourth phase when the data acquisition electronics are upgraded in late 2008. Presented here are neutrino oscillation results from SK-I and SK-II solar and atmospheric data, and a preliminary look at data from SK-III. Also discussed briefly is the upcoming electronics upgrade that will carry the experiment into its fourth phase.