I know Fitlike and possibly Rob will be watching, not sure about our American contingent. I don't think Australia are a chance, they were rattled by Wales last Saturday. I'm not buying into the dual-captaincy idea either. For my money and support, I think Ireland have a great chance. They're arguably the most in-form European team, with a great sqaud and a bit of underdog determination. It'll be interesting to see their form against the Pumas.
I think other top contenders will be:
New Zealand
South Africa
France
Wales (they're an outside chance, but they'll be tough to beat unless they brick it)