Forget about all the brassy, effects-laden blockbusters crowding the multiplexes this summer: For sheer entertainment value, none are likely to top this Argentine-Spanish anthology of comic shorts. Rich in black humor and satirical invective, "Wild Tales" became the most successful Argentinian movie of all time when it was released there last year (under the title "Relatos Salvajes"), picking up an Academy Award nomination along the way. But its vision of the country — as a land of systemic injustice, populated by people who are venal, self-serving and given to outbursts of violence — probably isn't one that the tourist board would endorse.