I know some of you have seen this howto:
http://www.howtoforge.com/nic_bonding
However, some people were having issues getting it working properly. So, I wanted to start the thread and see if this is working for people or not. I just updated it with some key changes (typos... left overs from Woody config) and I think it should work solid now.
Let me know if there are any questions maybe I could help.