Read this recently on the BC Boards:
"There is no more off-leash reliable, calm, sophisticated, go-with-you-anywhere dog than a trained sheepdog." -- Donald McCaig
This more or less perfectly describes Rodeo.
I've always referred to Rodeo as half border collie, half lab, because when there's no work to be done or no place to go, he lies down quietly and is as calm as you could ask for. And as Donald McCaig put it, he's a go-with-you-anywhere dog if ever there was one.