On the DVD

Raspbian Wheezy 2013-09-25 [download latest version]
Raspbmc 2013-10-02 [download latest version]
Pidora 18 r2c [download latest version]
PiMAME 0.7.10 [download]
NOOBS (offline and network install) 1.3.2 [download latest version]
Win32 Disk Imager 0.9 [download latest version]

Included on the DVD:

Raspbian Wheezy 2013-09-25 – General-purpose Raspberry Pi Linux based on Debian
Raspbmc 2013-10-02 Raspbian-based distro with built-in XBMC support for media center configurations
Pidora 18 r2c – Fedora Linux tailored for the Pi
PiMAME 0.7.10 – A pre-built system designed for gaming and retro game emulation
NOOBS 1.3.2 – User-friendly boot interface that lets you choose your Rasp Pi operating system from a simple startup menu. Return to the NOOBS interface at any time by holding down the Shift key at boot
Win32 Disk Imager 0.9 – A utility you can use to burn ISO images on Windows systems

Burn these images to different SD cards to switch between the systems, or explore the options through the easy NOOBS interface until you settle on a favorite.