General discussion by Schätzel, K, Livesey, A, Degiorgio, V, Fixman, M, Pusey, P, Weitz, D, Horne, D, Rarity, Fuller, G, Penfold, J, Van Megen, W, Néhmé, O, Philipse, A, Rennie, A, Lal, M, Prieve, D, Felderhof, B, Ackerson, B, McCammon, J, Brady, J, Jones, R, Sheppard, N, Smith, E