• "Behind the Business" with Marc Ecko. Marc Ecko Enterprises, 40 W. 23rd St., nr. Fifth Ave., 6:30 p.m. The press release states there will be an "intimate conversation followed by cocktails." Seems like the conversation would be more intimate if that order were reversed, no?

• Cabo Uno tequila tasting. Dos Caminos, 373 Park Ave. S., nr. 20th St., 6 p.m. Hosted by Sammy Hagar! Apropos of eighties arena rock, we went to Arlene's Grocery last night for their karaoke-with-a-live-band thing. A guy who looked to be about 45 years old tripped and fell face first off the stage in the middle of "Sweet Child O'Mine" … and kept singing from the floor. Surely he deserved the wild ovation he received — but would he not have displayed a more true devotion to the spirit of Axl Rose by petulantly stopping the show and assaulting a security guard?

Or check out our Agenda listings for tonight, selected by New York's culture editors.