I'll defer to the guys above as to why instrumentals are no longer popular. I love them though - and have been happily buying them on iTunes. Some of my most recent ones:

Wipeout
Pipeline
Dueling Banjos
Theme from "The High and the Mighty"
Theme from "The Good, the Bad and the Ugly"
Theme from "Hawaii Five-O"
Theme from "The Munsters"

Hmmm - I'm sensing a theme here.... smile

Scott