Sam (Matthew Broderick) is the reasonable man in a crazy urban world, the man of thoughtfulness and refined taste in a landscape of Leroy Neiman paintings and beer commercials. The guy would sooner cook for an hour over a hot stove than say `supersize it.' By day he's a store clerk in an upscale gourmet eatery, and these scenes raise a smile, especially for anyone who's visited the actual chain in New York City -- the portrayal isn't far off from the reality. Our man is besieged by hoards of customers who want their imported French cheese cut to impossibly exact standards. His efforts to remain outwardly polite (while you know he'd like to take the cleaver to the relentless clientele) are pretty funny, and will warm the hearts of clerks everywhere. In general, Broderick is in good form and provides the movie with most of whatever lightness it possesses. Sciorra's lovelorn dental hygienist, Ellen, is fine enough, too, and her unknowing interaction with our cheese-slicing hero shows some hopeful chemistry, and you may begin to feel you want to see these two get together. One of the main competitors for our lady's affections, a stockbroker (Kevin Anderson), is played as caricature: he…