The Beastie Boys’ Adam “Ad-Rock” Horovitz was eager to meet Rasheed Wallace at Thursday night’s Knicks game so the rapper could give the retired center a peek at a coveted pair of Wallace Nike shoes. Horovitz bought a pair of high-tops, with Wallace’s image on the side, which he found while touring in Belgium years ago. The rapper hauled them to MSG and showed them off to Wallace, who signed the kicks before the game. Ad-Rock was at the game with his Beastie bandmate Mike D — as were “Arrested Development” stars Will Arnett and Jason Bateman, Bateman’s co-star in the 1980s comedy “Valerie” Steve Witting, Olivia Wilde, Jason Sudeikis, the Olsen twins and Michael J. Fox.