So far...

Found a good article about how much taxpayer money we've given away so far (that we know of) at bbc:

US BAIL-OUTS

Bank of America: $45bn

Citigroup: $45bn

AIG: $40bn

JP Morgan: $25bn

Wells Fargo: $25bn

General Motors: $10.4bn

Goldman Sachs: $10bn

Morgan Stanley: $10bn

GMAC: $5bn

Chrysler: $4bn

Source: US Treasury

Found a great interactive guide to how much taxpayer money we've given away so far (that we know of):
The Slate Bailout Guide