An Oldie but a Goodie!
Polar clock screen saver came out in 2007, but is still my favorite screen saver. I really like the unique and fresh way of displaying the time and date. For those who don't know about the clock, the months, days, hours, etc. are displayed as portions of a circle. This circle puts a unique perspective on time and how much has lapsed.
The screen saver is free for download and is free of adware. Go download your copy over at PIXELBREAKER.