FerReel Animation labs, Inc. has released Blast Code ver. 1.2 for Maya. It also has released a new "light" version called "Kiloton". BlastCode is a Maya 5, 6 plugin that makes it easier to do demolition sequences. There is a new demo available for download at http://www.blastcode.com
Looks nice but unfortunately it's only ported to Windows, not Linux or OSX.