Exploring the Arts and Humanities
Music and Music Appreciation from Free-Ed.net
Exploring the World of Music from Learner.org video on demand series
Songs that Teach Music Appreciation,Music Theory and Musical Instruments
Teacher's Net Physical Education Lesson Plans
PE Central for K-2
Teaching Music Magazine
Songs for Teaching
Guitar Masters Classics provides lessons by level. I'll be checking this site out more.
Artcyclopedia offers wonderful views of scans of masterpieces and an extensive list of art museums world wide.