3Ds Max - Used in many video game designs. Better with low polygon animation, and has great plugins. (US$3500)
Blender - comparable Maya, 3ds Max, or Cinema 4D, and is available for free.
Cinema 4D - Light program, easier to use.
form-Z - Used for interior design and modeling similar in nature ($1495-$2390)
Houdini - Large studio program which is mainly used for animating visual effects.($17,000)
LightWave 3D - Weaker modeling and animating, but has a high ease of use. (US $795)
Maya - Most popular for movies/TV studios etc. Probably one of the most difficult animation programs to learn, but impressive and powerful.
Note: Used to animate the television series Southpark, which has been described as "building a sand castle with a bulldozer."
Modo - Modeling, texturing and rendering tool. (895$)
Silo - Modeler, but lacks any rendering capabilities ($109)
Softimage|XSI - Similar to Maya