What's a trillion dollars?

With billions of dollars being thrown around like change we've become desensitized to the reality behind these outrageously large numbers. Here's a sense of what this number actually represents:

http://caps.fool.com/Blogs/ViewPost.aspx?bpid=159954&t=01006124249416869148

And we're in debt to the tune of 11 Trillion dollars and climbing as a result of every Congress and President since
Reagan being a combination of too cowardly, greedy, stupid, arrogant, and self aggrandizing to limit themselves. Making this even more shameful is the fact that throughout the last 30 years we've had unparalleled prosperity and no major external threat that we had to deal with.