First Rollapaluza for me was at the Waterloo Action Centre, December 2007. Was 4 or 5 pints deep by the time my qualifier came round, felt desperately sick at the end, went outside and threw up while trying to hide behind a phone box. @BringMeMyFix won the event, beating a trackie in the final (Lee Povey?).
Best night was Kingspin 1 at Bloomsbury bowling lanes, summer 2008. Ended up missing my last train home and had to ride back to deepest darkest Kent while still pissed. Got home as the sun was starting to come up. Happy times.