New Jersey Gov. Chris Christie was a big hit with the “SNL” cast. The gov, who had earlier appeared on “Weekend Update” in his favorite fleece, joined the cast at the Asellina after-party to celebrate Lorne Michaels’ 68th birthday and toast host Jeremy Renner. Also there were Seth Meyers, Bill Hader and Fred Armisen, Jason Sudeikis and girlfriend Olivia Wilde, musical guest Adam Levine and his band Maroon 5. “Jeremy and Adam were hanging out together throughout the night,” says a spy.