There has been some pure speculation of late that with the stock market being in the free fall that it is, that Microsoft would make a play to buy the Canadian based RIM, the makers of Blackberry handsets. RIM, who's stock is selling at the $60 range at the moment, was fetching $148 a share just four months ago and is probably one of those undervalued companies some billionaire could make a fortune on if they decide to buy it on the cheap.

There's a rumor that Microsoft has a standing offer to buy RIM if the asking price ever drops to $50 a share. 

Obviously I don't know if that's true but RIM would be a good match for Microsoft, who have been trying to make a bigger splash in the cell phone industry, but need a stronger product than Windows Mobile to add to their market share. 

Via