I bought some shares of Caterpillar (CAT) today for my wife's RRSP. The basic thesis for this purchase is that for a long term hold, Caterpillar offers exposure to a leader in building out the infrastructure of the world. The short term may look very gloomy for this company, which presents a buying opportunity as the shares are down 65% from their all time high.
Caterpillar's CEO is actually predicting a return to 2008 sales levels within five years. This may or may not occur, but it is interesting to note that CAT was trading at $63-$85 during 2008 before the crisis hit.
Incidentally the stock actually yields a surprising 5.5% and is maintaining the dividend for now in the face of the downturn.