Not only is the animation an amazing blend of everything (CG, flash, stop-motion, traditional and some live-action) But this show is really damn funny. Gumball humor can go all over the place and still be really funny. Gumball and Darwin are a great duo and work off each other pretty well. The rest of the family are pretty good to but the one who takes the cake (and eats it to)is the dad, I know the dumb dad cliché is way too common But Richard is really a cut above the rest. The side characters are nothing to sneeze at to, Principal Brown gets some good quips in, Mr.Small is a hippie guidance counselor, The robot is a fan favorite, The ghost girl is cute, and Penny gumball's crush is more than just some token love interest. Anyways I'm just gonna recommend so episodes to give you an idea what kinda show Gumball is. The Fraud, The Law, The Check, The Shell, The Bus, The question and The origins part 1&2.
Review of The Amazing World of Gumball
