I'm having real trouble remembering that today is only Thursday, particularly as tomorrow is a holiday. I've even got a good start on my weekend headache.
Last night I was noodling around with ImageMagick making a mosaic of flower and bark pictures. Now I'm contemplating random-number-driven mosaic slideshows and photomosaics, and how to write programs to generate them. Way too many less-fun things to do this weekend, though.

(The small picture links to a 1200x900, 300K version).