I use one of OS X's pre-installed screensavers. It's the iTunes artwork one. I like seeing all my album art on the screen. powerofone;
What screensavers do you use?
My screensave is always shut off. I just have my monitor go into standby after 20 minutes.
I don't use one. All the ones I have are dumb looking. :(
An applescript that sleeps the display. I activate it when "locking the screen".