A more economical solution would be something like the registered version of DoGA CGA L3 ($40 or $20 if you have registered L2).
Some mid-priced packages like trueSpace, Hash Animation Master, or Lightwave would also do fine job.
Depending on your needs, POV Ray is an excellent rendering solution and it is a freebie.
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TAZ
I forgot one, if you have some form of scripting, your own game engine could be used to make intro scenes as well.
The "it" is a kind of force that gives rise to technology, something undefined, but inhuman, mechanical, lifeless, a blind monster, a death force. - ZatAoMM