Underdog is very enjoyable despite its flaws and deserves better for a jolly superhero film! Jason Lee did great as the titular role and I think it's awesome James Belushi is a main character in a dog movie especially since he was in the K-9 films in the 90's. It does what it's made for pure wild fun and simple 83 minutes; that should be appreciated for sure!

This movie was good, with the only purpose of entertaining kids and grown up people too. The adaptation from the cartoon was really good and the plot was convincing and very well developed although the story has some flaws, for example, Sweet Polly was a poodle in the cartoon not a cocker spaniel. The cast was good very decent acting from everyone, Jason Lee as the voice of Underdog was very good as well as Amy Adams as Sweet Polly. James Belushi performance was good, very funny and the best one of all in my opinion was Patrick Warburton as Dr. Barsinister. In conclusion, a typical family movie, very enjoyable and entertaining.

They did it again: ripped off an old show's title, then destroyed the nostalgia with boring "re-imagined" stuff. The '60's cartoon was one of the funniest of its time, a good-natured satire of super hero comic books. The character was drawn as 1/2 way between animal and human, the way Mickey Mouse is. Here they use a real beagle; that's about the same as making a Mickey Mouse watch with a real rat.

Most of the clever schtick that made the original show funny is missing from this film. Instead, we get a clumsy ex-police dog who's even dumber than Cad. And some pet owners who add nothing to the story. Cheesy effects (the dog-talking animation is embarrassing). Poor scripting. A stereotyped dwarf playing Simon Bar Sinister. The gravelly noise box guy they hired to voice Underdog is painful. You'd think they'd at least gotten a voice impressionist to approximate Wally Cox's humorously distinctive voice for Underdog. But no. There are, at least, a few affectionate references to the source material (such as the rhyming lines), which lift it to a 4.

Only small children that love dogs may enjoy this. Everybody else should get a DVD of the original cartoon series. Watch this only in desperation.

I don't get the hate aimed at this movie!! What were people expecting?? It's a kids movie about a dog with super powers. Realism obviously isn't to be expected.

Plot In A Paragraph: A bomb-sniffing dog is fired from the police force for a high profile mistake. That night Cad (Patrick Warburton) dognaps him, Cad works as a henchman for Simon Barsinister (Peter Dinklage) a mad scientist, who injects him with an elixir. The dog escapes, but now has superpowers. He's adopted by Dan Unger (James Belushi) a security guard - an ex-cop, who's a widower with a moody teen son, Jack. While Barsinister and Cad plot to catch him and take over the city.

Dinklage hams it up and Warburton dumbs it down to amusing effect, while its always good to see James Belushi in screen. I watched it with my young son, and we both enjoyed it. He was the target audience, and I enjoyed it for what it was.

I have seen much worse kids movies...

I was shocked to see this movie has got such a low rating!I mean,why in the world would people give a movie like this 4.5 stars!Have they lost their sense of humor? Or the childhood that once resided inside their heart just died somehow? I'm giving this one a 10 star rating..not even thinking whether the cgi effects,or the scripts and whatever were weak or not.I'm just praising this because I found it very entertaining,forget everything else.Just try to watch this as you used to watch TV in your childhood days.If you still like "tom & jerry",you should also like this.And even if you don't like it,your kids are guaranteed to love it seriously.So you should give this at least a respectable rating since it is loved by your kids!(Hang your opinion!)