I used it when I wrote a 3D engine for my final yr uni project. Worked very well, and did exactly what it said on the tin (ie cross-platform media library).
As for screen shots, I dont see what I would shot?. SDL isnt a graphics library, all my GFX where drawn using OpenGL which ties nicely in with SDL. Ive included the screenies I had of my project below, but like I said, these have very little to do with SDL.
http://203.94.138.50/crap/uni-work1.jpg
http://203.94.138.50/crap/uni-work2.jpg
http://203.94.138.50/crap/uni-work3.jpg
[edit: It appears 'Star Sphere' is still a banned word here, so ull have to type in the url instead.]
[edit again: Or i could just stick in the IP like that
.]