Wondershare has a BlackBerry Converter Suite available for BlackBerry, and the abilities it has are will make conversion even sweeter. I was able to check out the software myself and let you know what I thought about this particular suite of two products: Video Converter for BlackBerry and DVD to BlackBerry Converter.
Wondershare has this suite, along with other products available. This particular suite has the following description:
Wondershare BlackBerry Converter Suite: Rip DVDs, Convert Videos, Extract Audio, Edit Video, and Upload to Any BlackBerry Device