We gave it a B-
The TV-cartoon superpooch, voiced by Wally Cox, was a canine nerd who lisped out his lines in rhymed couplets. This digitized update, with Jason Lee as a huskier, more generic Underdog, mostly drops the doggerel, but the endearing airborne-beagle effects help to offset the formula twists. Maybe that’s because Lee himself seems stunned to be flying. Amy Adams is Polly Purebred, now a very lady-like Cavalier King Charles spaniel, and Peter Dinklage, as Simon Barsinister, does mad-scientist camp with glee.