The bailout in the 1980s cost roughly $125 billion, so the $15 billion noted by heric is undoubtedly only the beginning.
The NY Times today reports analysts estimate about 150 of the 7500 banks may fail, again a fraction of those that went under in the 1980s (about 1000 then).
The FDIC has $53 billion set aside to pay depositers in failed banks; the Indymac falure will take $4-8 billion of that.
Indymac has already been re-organized with a new name and is in business again.
See today's NY Times.