ThemeForest - 907 v2.6.1 - Responsive WP One Page Parallax | 2,40 MB
Great one page WP theme with tons of options and features. Not only will the PARALLAX feature be on the main one page, but you can also select a DEFAULT PARALLAX section and even a "page section" to be displayed across all other pages... AND You can change parallax/page sections per blog post/pages, choosing a different one or setting to none.
DEMO:
http://themeforest.net/item/907-responsive-wp-one-page-parallax/4087140