I hope so...but I can't get them to work??

There is no Flash plug-in for BlackBerrys. (I don't believe there's one for Windows Mobile either.)

Even it is was supported, and I do not think that it is, streaming content is not allowed on your service plan. Besides not allowing that type of content, those unlimited services, are in fact limited. Verizon for instance caps traffic at 5GB per month. It would be very easy to go over that viewing videos from the internet.

You can convert them relatively easily so they do work. I can't remember if Roxio does it for you or you have to use BVC first. Search for those threads and you will see how. Or just try Roxio first in the latest DM.