How can I make soundtracks with one artist sort as soundtracks in iTunes (and iPhone)? Most of the soundtracks in my iTunes library have the Album Artist tag "Various Artists" and so they all appear together in the V's in Albums view. A few soundtracks have only one artist (composer) or mainly one artist, and they appear in a different location.

For example, the soundtrack for The Incredibles appears with the M's for the artist, Michael Giacchino.

Should I change the Album Artist tag to "Various Artists" to make it sort with the other soundtracks? Maybe I should change the Album Artist tag in all of my soundtracks to "Soundtrack".

Any better ideas? Thanks!
You've pretty much figured it out. Just pick a consistent description to use for the Album Artist or Sort Artist and your albums will group together, while being able to preserve the artist for a specific track. The de facto standard for this seems to be calling it "Various Artists", but there's no reason you can't do whatever suits you, whether that's "Soundtracks" or a specific title for each individual soundtrack album.