of boston scientific sent its shares tumbling 9%. dean foods jumped 11.5% on higher than expected quarterly profit. medifast rose 17% after reporting earnings that beat expectations. keep an eye on disney today. after the bell, shares fell on revenue that missed expectations. elsewhere, oil rose to $103 a barrel while gas pump prices fell for the fifth straight day. gm will invest about $2 billion in 17 u.s. plants and add 4,000 u.s. jobs over the next year and a half. united states postal service posted a $2.2 billion net loss for its second quarter and hinted it may need a congressional bailout by september. finally, it was once an unthinkable relationship. but today, how close has china's communist economy come with america's wall street?