I'm using mine as a utility web/mail/file/gnu-screen server in addition to storing pictures from the security webcam.
Had mine for about a year. Its a perfect fit right onto this UPS unit. That means I don't have to worry about ripping out wires or moving things. I'm very pleased with the reliability. Unlike other computers, there's no worry about ripping wires out or moving it to a new location.
THANK YOU to cbxbiker61 and countless others for maintaining a kernel, installer, and other helpful utilities. I wish there were more names in the README files. Good scripts have helped make this run flawlessly since I updated it 52 days ago. Root is now from a Sandisk 16GB and much faster than I expected. I have the USB into a hub for the external hard drive so the sheeva may run cool.
Having this little guy at home makes my cell phone more useful too. I can press the Android Connectbot icon to do a passwordless ssh auth login where gnu-screen is the default shell. That means hitting a button logs me in right where I left off the last time. The sheeva has become my remote desktop.
This is perhaps the greatest computer I have seen in my lifetime. That's my story. I just wanted to brag about it. I hope others have good stories to share too.