Was once sitting in the bar with a mate (on the Hardman St side) of the Philharmonic, when our conversation was interrupted by an ashtray on the counter suddenly moving sideways about six inches. Yes: 'it's the trains in the underground' or 'there's spilled beer on the counter acting as a lubricant' were the first two obvious explanations that came to mind. But, when we got up to investigate, we found that the counter was dry as a bone, and the ashtray both abrasive on the underside and seemingly weighing more than a bag of sugar. It didn't even move when we pushed it. Felt quite 'weirded out' . . .