Katie Couric is back on the dating scene, but not without one of New York’s most inquisitive media watchers noticing and causing mischief. Newly single Couric, who split up with boy toy Brooks Perlin last month after five years, went on what she hoped was a quiet first date with a mystery man to SoHo’s Lure Fishbar on Tuesday night. Unfortunately for Couric, Dan Abrams, ABC News legal analyst and the founder of Web sites including Mediaite was at the next table and began “throwing edamame at her in a friendly fashion,” we’re told. Despite the distraction, Couric appeared to be “laughing and enjoying herself.”