Interesting threads

At some point these links will probably find pages to move to, but for now we'll just collect them here for reference.

MOSFETs as clipping diodes
Relays and zener diodes
Using SMD components
Bias voltage, quick, clean, cheap - Bias voltage using LM386!
Signal generator
Piggybacking transistors - or using dummy transistors to lower gain of si transistors.
Parallel transistors

Things there should be pages about here

Amps - Specifically chip amps, lots of nice information.