Puppet Dashboard has a "radiator view" that consists of a small and simple web page that shows the state of the last puppet runs. This is a screenshot:

https://a248.e.akamai.net/camo.github.com/3673cadf1a77b9918f4a0335051d573e9742e15c/687474703a2f2f692e696d6775722e636f6d2f416c3833382e706e67

Users like it because you one put it in a little iframe and control the whole infraestructure with a simple look.