Here's a list of where projects are filming around NYC:
The Other Guys: Signs spotted south of Canal Street on Baxter Street, Centre Street, and Lafayette Street in Manhattan. Update: Signs also spotted around Division and Canal.
Wall Street 2: Harriman State Park, 7 Lakes Dr, Highland Falls, NY
White Collar: E 50th and Park
Gossip Girl: Filming in Old Westbury, LI. Might be at the same location where they filmed in July- around Post Rd and Groton Pl.
Law and Order: CI: 25th St and 3rd in Brooklyn
And here's a few for L.A.:
Inception: 215 Grand Av S, Pasadena, CA
Christmas in Beverly Hills: 1401 Oak Knoll Av S Pasadena, CA
Numb3rs: 2640 N Figueroa St (from 12pm-8pm) and 2807 N Figueroa St (from 2pm-3am), Los Angeles
The Forgotten: 6th St Bridge, Mateo St – Boyle Ave & 6th St under Bridge, Santa Fe Ave – East to L.A. River, Los Angeles 5 am- 10 pm