President Obama came face-to-face with his “SNL” counterpart at Harvey Weinstein’s fundraiser on Monday. The show’s resident Obama impersonator, Jay Pharoah, made a cameo appearance at the event at Weinstein’s home, and had the president in stitches, we’re told. A witness tells us, “Steve Martin, Justin Timberlake and Jessica Biel did a skit pretending they worked at the White House, and started questioning if they were getting a directive from the real president. Then Jay came in and imitated Obama right in front of him. The president was surprised, then started laughing.” Guests witnessing the skit included Melanie Griffith, Tommy Hilfiger, Steve Buscemi and Uma Thurman.