I've compiled a small A-Z list of music/production/sound related wikis... (Possibly for inclusion at the bottom of the Production Bible v2 thread?)
If anyone is willing to proof read this for a-z sequencing mistakes and search for further additions, that would be smashing!

--------------------------------------------------------------------
Wikipedia links I feel need adding include:
-Wikis about musical instruments (both individual instruments & instrument groups/types i.e. strings, brass, thumb piano, Katzenklavier etc etc...).
-Lists & types of music genres & catagories (anything from Jazz to Gabber).
-Music theory concepts.
-Audio theory concepts.
-Composition theory & concepts.
-Famous/landmark manufacturer's/software developers (Moog etc etc).
-Famous/landmark synth & sampler units (TB303, 808 & 909 etc etc).
-Famous/landmark software (Pro Tools, Rebirth, Cool Edit etc etc)
-Odd musical concepts or phenomena.
-Odd musical instruments or software (ReacTable, Theromin Catclavia etc etc). (Stuff that's really unconventional, not just VST plugins.

-Wikis related to the electronics side of music audio and sound etc.
-Wikis related to the physics of music, audio and sound etc.
--------------------------------------------------------------------
Post replies or PM me any additions and I'll gladly add 'em to the list

Thanks!