9/11 commercial to boost New  York tourism directed by Barry Levinson (I) (qv). In the ad, the  two squabble about their costumes as participants on a Macys  Thanksgiving parade float. Crystal tries to persuade De Niro to  trade outfits with him, at one point being reduced to parodying the  latter actors famous line from _Taxi Driver (1976)_ (qv): "Are you  gobbling at me? Are you gobbling at me?"