National Cinema Day is underway with 3,000+ participating theaters (30,00 screens) offering $3 tickets, discounted concessions and a four and a half-minute preshow sizzle reel with peeks of upcoming titles from A24, Amazon Studios, Disney, Focus Features, Lionsgate, Neon, Paramount, Sony and Sony Pictures Classics, United Artists Releasing, Universal and Warner Bros. Trailers include Avatar 2: