Helix is a free premium WordPress theme. This is a WordPress 3+ ready theme with features like custom menu, fullscreen slideshow homepage, widgetized sidebar etc. Theme also comes with an option panel.
Options Framework - http://wordpress.org/extend/plugins/options-framework/
About the fullscreen slideshow
Fullscreen homepage slideshow images are added using custom post type called Slides. They are like posts. Click on add new slide and enter a name for the slide and add the image as the featured image. Add it to a category as you wish.
How to get the slideshow on homepage?
The theme offers a custom homepage template. You have to use the static front page feature under the Settings > Reading option. You can select a page for the homepage. Make sure that page uses the homepage custom template.
Theme options explained
The theme contains an options page using which you adjust various settings available on the theme.
Slider setting: There is a fullscreen slideshow on the homepage to show off your projects or photographs. The images are added via slide custom post type. You can select the category of images and the number of images to show.
Default background Use this option sets a default fullscreen background on inner pages.
Social bookmarks Enter the social netwok ids and url.
Banner setting: Configure the banner ads on the sidebar