Ben Affleck: New 'Argo' Poster!

Ben Affleck suits up for The National Multiple Sclerosis Society’s 38th Annual Dinner of Champions on Monday (September 24) in Los Angeles.

The 40-year-old actor posed for some pics before enjoying the rest of his night inside the Hyatt Regency Century Plaza.

PHOTOS: Check out the latest pics of Ben Affleck

The poster for Ben‘s upcoming flick Argo was recently released.

In the movie, which hits theaters on October 12, Ben plays a CIA exfiltration specialist who concocts a risky plan to free six Americans who have found shelter at the home of the Canadian ambassador.

Also inside: Ben heading to a meeting in Santa Monica.

10+ pictures inside of Ben attending the Multiple Sclerosis Society dinner…