I don't do screen savers anymore. I use display sleep for longer periods of time and save images that I like to a specific folder to be used under desktop images that cycle through every minute (random order).
The images my desktop cycles through are comic book artworks, landscapes, friends/family photos...whatever I find pleasant to look at intermittently. I like the control it allows me over what shows up - and the variety. Right now, my MBP has a screen capture of the video game Robotron 2084 and the second display is some kinda Japanese maple scene.