Probably the Leo Cluster.
Having seen the comet in the same field as Regulus and Saturn, the latter with rings almost edge-on, not to mention that spectacular crescent moon-Venus conjunction, it's been a good month to reflect on both the interconnectedness of the universe, and on chance alignments and meaningless coincidences. Last night I saw a distant aircraft "eclipse" Venus and noticed that Sirius and Canopus, the brightest stars in the sky, are almost on the same hour of Right Ascenscion.
If you don't know any astronomy, you have no idea what really matters.