IFC hosted screenings up and downtown Thursday. Kristen Wiig hung close to Lorne Michaels on a couch at IFC’s second season premiere of Carrie Brownstein and Fred Armisen’s show “Portlandia” at the Museum of Natural History. Wiig’s been dating the Strokes’ Fabrizio Moretti, but she rolled solo to the screening, which was full of fellow “SNL”-ers, including Seth Meyers, Andy Samberg, Jason Sudeikis and Bill Hader. (Sudeikis got into the hipster spirit by sporting a backpack at an after-party.) IFC Films also hosted a VIP screening at the Crosby Street Hotel of France’s foreign language Oscar submission, “Declaration of War,” by Valérie Donzelli.