3D Modeling & Animation:
Modo
Lightwave
Maya
ZBrush

Texture Painting & 2D Image Editing:
Adobe Photoshop
Adobe Illustrator

Compositing & Tracking:
Shake
After Effects
Motion

Video Editing:
Final Cut Pro
These are my main tools, and where most of my expertise is in. However, I have a strong background in Networking & Systems designs as well as Security.
Software I use: Tools are just an extension of the artist to complete his work. So at the end of the day a talented artist can do good work regardless of the software. However, there is something to be said for powerful well made tools that help you be more efficient & productive. In the end, I deliver my work in whatever format my client requires, but here is a list of my preferred creation tools.
Computer Hardware:
Apple MacPro Tower (Quad)
MacBook Pro
Mac Mini

Drawing Tablet:
Wacom

Storage:
Loads of Terabytes , complete with redundant backup solutions for ultimate project protection.

Production Operating Systems:
Mac OSX Leopard
Virtualized Windows XP (only if needed)