I can certainly recommend Paul Hewitt's book. he has a style of explanation above anything elese we have used. I managed to pick up a second hand copy (I live in the UK - I had to buy from the US). The only downside is that I didn't get access to the website that accompanies the book.

One other book useful for delving when you need to back up any teaching is Asimov's Undertsnding Physics, which, in his inimitable style, explains more of the mathematical side in a way that a non-mathematician like myself can follow
http://www.amazon.co.uk/Understanding-Ph...42251467&sr=1-1

If you can you might also try and obtain a copy of Eureka on DVD. I know it used to be available on youtube. It is invaluable - I wish they had made another series.

Another great resource is "the way things work". the book is still available, but if you can get a copy of the DVD I highly recommend it:
http://www.amazon.co.uk/The-Way-Things-W...42251264&sr=1-1

One last one - Physics for superheroes
http://www.amazon.co.uk/Physics-Superher...42251374&sr=1-1

some hate it - but I really took this book and the style of explanation. Might be my age

Thanks for all of these terrific suggestions!

I'll be back to add a couple of other open-source links.
MITx was mentioned, yes? TED also has some interesting material.

Coursera and Udacity are also on my radar, though I've not checked either one out very thoroughly at this point, so I can't say what they have which is physics-specific.

High school level material (not just physics):

SAS curriculum pathways.

Oh-- for lab materials, Labpaq and esciencelabs.

A bioinformatics professor is homeschooling his son and a few other students in AP Physics C, describing the lessons and experiments (including computer analysis of experimental data) at his blog

http://gasstationwithoutpumps.wordpress.com/tag/ap-physics/ .

The textbook used is Matter and Interactions http://matterandinteractions.org/ .