Two failing brands latch on to each other: Motorola (NYSE: MOT) has tied up with Blockbuster (NYSE: BBI) to launch movie downloads on some of its select handsets, via an app on the phones. The deal will allow “thousands” of movies to be downloaded through BB’s OnDemand online movie service. Later on this will be expanded into other kinds of digital entertainment, it says. Here’s my question: who cares? Release.