"Radial Radius" was the interesting cache of the day. It's a puzzle where you have to determine the center of the circle given 3 coordinates on its circumference. I did the calculation using PARI/GP a few months ago, but only got around to seeking the cache today. I was about 200 feet off, due to not correcting for curvature or something like that, but the hiding spot was visible from 200 feet away so it worked out fine.
I'm surprised no one has found "Goin' Postal" by accident. It shows how people sometimes don't notice things even when they come within an inch of touching the cache in the course of daily activity. It's a cool cache placement, but insane.
Saw a car with a CB Antenna (possibly) on my way home. The setup was so tall that it came pretty close to brushing against the overhead signs on the NJ Turnpike!