“Sixth Sense” star Haley Joel Osment was caught dining alone on Wednesday at D.C.’s Art & Soul restaurant at the Liaison Capitol Hill hotel, a Yeas & Nays spy reports. He enjoyed some of chef Art Smith‘s ravioli. We’re told he was later spotted, again alone, this time at ArtBar, chowing down on a ham and cheese biscuit. “Perhaps only he could see his companions?” our source adds.