This is a one minute explanation of evo-devo by Chris Mims, Editor of Scientific American. According to Mims, evo-devo is the idea that there are regulatory genes making proteins that control the expression of other genes. Many species have homologous regulatory proteins.
Whaaaaa? If that's all there is to evo-devo then what the hell is all the fuss about?
PZ Myers seems to think it's pretty cool [Evo-devo in 60 seconds]. Apparently PZ even helped with the script [What Is Evo-Devo?]. Maybe PZ can explain why evo-devo is so important if this is all there is.
Maybe you can't read it in 60 seconds but I think the description of evolutionary-developmental biology on the Wikipedia site is far better than this video.
Of course no definition will excuse some of the nonsense that's being spouted in the name of evo-devo [Evo-Devo: Innovation and Robustness in Evolution].