Thursday has often been called a day of thirst, probably because we need an excuse to drink on a week night, and the wordplay writes itself. We wish we could refrain from suggesting at least one bar, just to rebel against the 'thirsty' designation. Well, we can't refrain. We just plain can't. But at least we have some music to serve before the booze. THE FOO FIGHTERS AND SERJ TANKIAN AT THE WACHOVIA SPECTRUM......