Seems like Massachusetts should get a little more credit. Between 1981 and 2008 MA residents paid in $923,986 million dollars in federal taxes yet they received federal payments back of only $847,872 millions dollars (www.taxfoundation.org). Without states like MA, all those states dependent on the federal government would not get to share the 76,114,000,000 profit that the feds continue to reap from MA over the years. For example, picking a few states at random, Virginia received $375,627,000,000 more in federal payments than they contributed during this time period. Then there is NC which only received $9,255,000,000 more in federal payments than they contributed and Idaho which only received $21,528,000,000 more and Texas had a net gain of 133,310,000,000.
I guess this should be #6 on the list that started this thread.