Project being run out of Stanford University: NetFPGA, a Field-Programmable Gate Array (FPGA) geared toward network device development. As in, building your own hardware IP router and/or Ethernet switch. It's essentially a mini-computer with four GigE interfaces that can be installed as a PCI card.
A wiki page dedicated to explaining Troubleshooting Commands for IOS Devices in practical terms. The intent is to compile commands relevant to troubleshooting the behavior of a Cisco IOS device itself (CPU, memory, performance, etc.) and to provide an accompanying description of each.