Every day in New York City, celebrities are sweating on the treadmill next to you at the gym and taking up tables at restaurants. Lately in #stalker sightings: Richard Gere, Alan Cumming, Lady Gaga, and Mischa Barton.

Submit your sightings: 1. Email them to stalker@gawker.com or 2. publish it immediately on the Stalker site by entering the info into the Share box at the top of the page and including the #stalker hashtag. Either way, be sure to give us details you'd want to know - what they were wearing, what they said, who they were with, what they ate. Brownie points for spelling their names right and using proper capitalization.