"Casino" is definitely worth watching. Don't expect the mordant humor of "Goodfellas" and the nonstop, slam-bang action. But you get a long, careful, detailed look at Mob action in Vegas in tight focus, DeNiro's best performance since "Goodfellas," an unforgettable performance by Sharon Stone, plus Pesci at his most vicious, and Scorsese's usual casting brilliance and attention to detail.