How big is a trillion dollars?

The US Federal Reserve has announed a plan to pump an addition $1 trillion dollars into the US economy. This is on top of the already announced $700 billion bail out of the financial sector and the $800 billion stimulus package for the economy. We're all becoming a little immune to these numbers so how much are we really talking.

Here's a million in $100 dollar bills.

You could put it into a small bag and walk around with it. In Ireland a few weeks in a Tiger robbery an employee of Bank of Ireland went into their College Green branch early in the morning and walked out with about €6 million euro in a couple of bags. How would he have fared if there was €1 trillion in the vault?

Here's a trillion dollars!

Some video