Sony Vegas is a professional non-linear editing system (NLE) originally published by Sonic Foundry, now owned and run by Sony Creative Software. Originally developed as an audio editor, it eventually developed into an NLE for video and audio from version 2.0. Vegas features real-time multitrack video and audio editing on unlimited tracks, resolution-independent video sequencing, complex effects and compositing tools, 24-bit/192 kHz audio support, VST and DirectX plug-in effect support, and Dolby Digital surround sound mixing. It's designed for Microsoft Windows XP, Vista and 7. In April 2007, Sony along with AMD jointly demonstrated a 64-bit version of Vegas running on 64-bit Vista.

Vegas Pro 10
Sony Vegas 10, released October 11, 2010, introduces many new features such as:
Stereoscopic 3D Editing
Comprehensive Closed Captioning
GPU-Accelerated AVC Encoding (Using NVIDIA CUDA)
Image Stabilization
Audio Event FX
Track Management
and a few more updates and UI changes.

This is a PORTABLE VERSION. All you have to do, is run this as an administrator, otherwise, it will come out as a window that asks for the registration code for Sony Vegas Pro 10. Run as Adminstrator, and voila, Sony Vegas Pro 10 at your finger tips. No activation needed, so no pain in the butt trying to activate it using 2 computers, etc.