Med ----> (a can of worms dont use!)
Blender ----> (if you like the interface good luck but if you have time its worth learning and its free and complete!)
Fragmotion ----> (cheap and useable!)
Milkshape ----> (cheap and useable!)a link to show how fast or how slow milkshape is in animation. http://www.youtube.com/watch?v=vpXS_bjObxY
3d studio ----> (expensive dont use!)
Wings 3d ----> (free but no animation! Wings3d is by far the easiest modeler to use!)
Coat 3d ----> (not an animation program last time i checked!)