To expand upon what HotRod_nut said, if both your i-Opener and your PC(s) are on a network, the i-Opener can be used as a very nice, inexpensive, remote PC-control device.
I have Midori Linux installed in the SanDisk on my i-Opener, and I use it to not only surf the net (with Opera) and stream music (XMMS), but I also use it to remotely control either of my two networked PC's using VNC. In fact, one of my PC's doesn't even have a monitor! It just runs the VNC server program and my other PC and i-Opener run the VNC client. Just set the remote PC's screen resolution to be one "level" lower than the i-Opener, and everything is nice and clean.
My i-Opener with Midori Linux takes under a minute to boot, is very quiet (no fan or HDD spinning), and is small enough to be "out-of-the-way".
The only problem with this setup is that the i-Opener's screen is rather crappy to begin with. It's great for doing the occasional web search or remote PC control, but as a primary display device, it is not the greatest.