i'm melissa lee, traders are tim seymour, steve grasser, brian kelly and guy adami. tonight on "fast" the man wholed can a the fall in valeant, the only analyst with a sell rating for nearly two years on the stock. he tells us how he saw it coming and when he thinks is next for this beaten down stock. >>> plus, one of the most important indicators in the market is flashing a buy sign. we'll explain why it could finally be safe to start buying, and later facebook making the list of the most popular stocks on the street and following the in crowd may not be your best bet. we've got the four stocks you need to avoid and first start off with the markets closing at two-month highs with the s&p closing just a hair above 2,000, what a week, s&p posting gains of 7.2% and this might be the reason why. oil, its best week since august, a stunning 10% move this week alone. so where do we go from here and as we even look out to the ecb and china's national congress next week, is oil still the key to this market in. >> guy. >> i think it is, it started on february 6th and we talke