This past week, I published Larry Lessig's talk from ETech on Changing Congress. This is a very good talk on what's wrong with Congress and how it can be changed. The talk is not partisan--it's about the ways that the system, more so than the politicians, is corrupt and needs reform. I highly recommend it.
After you listened (or before), head over to Change Congress and fill out this petition on earmarks.
Update: To see earmarks more clearly, check out the earmark visualization tool from the Sunlight Foundation.