austin taylor o'brien (born may 11, 1981) is an american actor and photographer. he may be best known for playing the co-lead danny madigan in the arnold schwarzenegger-movie "last action hero", followed by his turn into romance as nick zsigmond in "my girl 2", a part in both "the lawnmower man" and . and as josh greene in the cbs drama "promised land". he originally gained fame from a circuit city commercial as a kid who, after finding out he'd saved money, says, "cool" to the store's employee.