Big names gathered at Tanglewood over the weekend to celebrate legendary composer and conductor John Williams’s 80th birthday. Guests at the Saturday event included Williams’s frequent collaborator Steven Spielberg, soprano Jessye Norman, James Taylor, and Yo-Yo Ma. The program included Williams’s themes from “E.T.,’’ “Star Wars,’’ and “Harry Potter’’ films. . . . Taylor Swift was spotted in her favorite red polka dot bikini in Hyannis Port again on Friday. The singer, who’s become a regular on the Cape, was seen holding hands with her boyfriend, Conor Kennedy. . . . NECN’s Jenny Johnson hung with her sister, Hillary, while serving up drinks at the 21st Amendment on Thursday night to raise money for the Pan-Mass Challenge. . . . Boston Bruins guys Tuukka Rask and Tyler Seguin dined at Strega Waterfront on Saturday.