There is great detail in A Bug's Life. Everything is covered. The film looks great and the animation is sometimes jaw-dropping. The film isn't too terribly orignal, it's basically a modern take on Kurosawa's Seven Samurai, only with bugs. I enjoyed the character interaction however and the bad guys in this film actually seemed bad. It seems that Disney usually makes their bad guys carbon copy cut-outs. The grasshoppers are menacing and Hopper, the lead bad guy, was a brillant creation. Check this one out.
Review of A Bug's Life
