Wall-E is all about love, loneliness and longing as personified in our adorable hero Wall-E, himself. He's been toiling away for hundreds of years on a deserted and environmentally wasted Earth where piles of garbage and wreckage are stacked sky-high. Wall-E is, essentially, a trash compactor who has been tasked with organizing and compressing these towering piles of garbage in a fruitless effort to clean up the waste and excesses that have destroyed life and forced humans to abandon the planet. The film's opening scenes brilliantly tell the story of Earth's demise while simultaneously showing Wall-E going about his daily routine. It's made perfectly clear that Wall-E is the last surviving robot of his kind as his now broken-down brothers are scattered across the desolate landscape. Fortunately, they provide the appropriate parts to help Wall-E continuously repair himself. It's also clear at this point that Wall-E's hundreds of years of solitude have allowed him to develop a personality. His only friend is a ridiculously cute cockroach who acts as his pet and follows him around as he stacks garbage and collects trinkets from the rubble. Wall-E is a curious little guy and he's turned his makeshift "house" into a giant display case for his beloved trinkets. Wall-E has also managed to develop a love of music and spends every evening watching his old videotape of Hello, Dolly! while learning the film's dance routines. Of course, there's more to Wall-E than his curiosity about these weird human trinkets. He's developed a longing for companionship.