import arcpy
mxd = arcpy.mapping.MapDocument("CURRENT")
df = arcpy.mapping.ListDataFrames(mxd)[0]
df.zoomToSelectedFeatures()
arcpy.RefreshActiveView()
del mxd
Scott,
You can use the ArcPy mapping module to zoom to extent or pan to a feature.
import arcpy
mxd = arcpy.mapping.MapDocument("CURRENT")
df = arcpy.mapping.ListDataFrames(mxd)[0]
df.zoomToXY(lat, long)
arcpy.RefreshActiveView()
del mxd