I really like the electric sheep screen saver. I have it installed on my work machine which is of course debian, which makes everything easier. At home though, no such luck. I didn't find any mandrake packages, so I just installed it. It actually worked first go for me.
Here's what I did:
1) download source
2) following commands:
[arthur@toaster arthur]$ tar -xzf electricsheep-2.5.tar.gz
[arthur@toaster arthur]$ cd electricsheep-2.5/
[arthur@toaster electricsheep-2.5]$ ./configure
[arthur@toaster electricsheep-2.5]$ make
[arthur@toaster electricsheep-2.5]$ su root
Password:
[root@toaster electricsheep-2.5]# make install
3) start up the Xscreensaver (for me this is menu -> system -> configuration -> other -> screen saver)
4) done!


