Learning vids from the excellent Hugo Guerra
Vids from The Foundry, this one with links to many assets.
The Foundry's channel on YouTube. Most of the Nuke specific videos are in the preceding links.
Nuke Station: a whole bunch of video tutorials on a number of Nuke related topics.
Some good intro movies from the Foundry Nuke interface overview, Importing footage / elements, Constructing node networks, A YouTube playlist: learning the basics of Nuke.
The Foundry's own forum
The Jahshaka forum
Movies and sitch
The Nuke Vimeo channel. Lots of demo reels and stuff.
Nukepedia: An excellent resource for GiZmos, plugins, tutorials etc. Quite high end.
Satheesh Nuke Tutorials: Quiry, slightly teky, blog on Nuke stuff. Like.
Creative Crash: forums, gizmos, plugins etc.
Enemy@thegate: Some cut and paste Nuke wave expressions for the Curve Editor. Useful for animating wobbly, noisy or repeating things.
Nuke users mailing list archive. Very useful for high end users.
Thought VFX: A nice blog by a Nuke vfx guy
Final Color: A good blog on color grading
Edward Tufte: A great little page of framing within the movies
Live as a CG artists without texturtes? Cant be done!