He ain't heavy...

For fans of utterly useless information, apparently there are 13 sets of brothers set to be involved at RWC 2011:

• Manu Tuilagi (England) and Alesana Tuilagi (Samoa)
• Sailosi Tagicakibau (Samoa) and Michael Tagicakibau (Fiji)
• Salesi Ma'afu (Australia) and Campese Ma'afu (Fiji)
• Jamie and Phil McKenzie (Canada)
• Owen and Ben Franks (NZ)
• Anthony and Saia Fainga'a (Australia)
• Marco and Mirco Bergamasco (Italy)
• Bismarck and Jannie du Plessis (South Africa)
• Darryl and Ryan de la Harpe (Namibia)
• Vakhtang and Zviad Maisuradze (Georgia)
• Andrew and Roland Suniula (USA)
• George Pisi and Tusi Pisi (Samoa)
• Isitolo and Finau Maka (Tonga).

I know, I know, fascinating stuff. I may have mentioned previously that "interesting" is my middle name.

PS - I stand corrected by BigJocktheLock. There are of course 14 sets of brothers - how could I forget Sean and Rory Lamont?