Mac-O-Lantern 1.3.1 
712 KB, freeware, rate: 
Mac-O-Lantern is an animated (or not animated) Halloween Jack-O-Lantern for your desktop
more info screenshot

LunaSaver 1.2.4 
803 KB, freeware, rate: 
LunaSaver is a simple Screensaver for Mac OS X which displays the current phase of the moon, along with some detailed lunar information. Simply double click the LunaSaver icon to install
more info screenshot

iCat 2.0 
1.54 MB, freeware, rate: 
iCat is totally useless waste of bits is a floating cat head that lets out various quotes, noises, and smells. Note: prolonged use can lead to spontaneous decapitation
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SereneScreen Marine Aquarium 2.6 
4.54 MB, shareware, rate: 
SereneScreen Marine Aquarium - you've seen aquarium programs before, but you've never seen anything like this! Marine Life so vibrant you won't believe your eyes. Indescribable realism
more info screenshot