Constant complainer Andy Rooney would probably decry speed dating as a recent hallmark of our ever-accelerating culture, but the concept has been around since at least 1998. Unattached Kansas Citians wishing to celebrate the '90s while meeting up to 12 prospective dating partners in one evening can enroll for a KC Speed Dating session at 7 p.m. at 12 Baltimore (106 West 12th Street, 816-346-4410). Hosts guide guests through seven-minute conversations with rotating members of the opposite sex, and everyone gets a "match card" to discreetly record which daters they're interested in seeing again. If two guests are mutually inclined, KC Speed Dating releases contact information so they can set up a date. Pre-registration is required at kcspeeddating.com, a site that helpfully addresses nearly every concern that an on-the-fence speed dater might have. The cost is $30, and if you can't find anyone to date the first time, the next session is free — a guarantee that not even Andy Rooney would whine about. This event is for professional men who are 31 to 41 years old and women who are 31 to 40.