See if this sounds familiar: A sweet, lonely, non-human - but decidedly male - being with a limited vocabulary toils through a portion of Earth all but completely devoid of life, performing the same mundane, regimented activities day after day. Occasionally, he augments the dreariness by collecting tchotchkes from more civilized days, which he stores in his makeshift home-slash-warehouse, and comforts himself by playing old music on a recognizably antiquated device. One day, a beautiful female enters his life, and although he's initially nervous about making contact, he proceeds to woo her by offering safety and shelter, making her laugh, and subtly expressing his undying devotion. The female, however, soon leaves, but our protagonist doesn't take her evacuation lying down. Instead, he follows his beloved, and subsequently sets into motion events that not only might reunite the pair, but might lead to the rejuvenation - indeed, the very survival - of the entire human race.
If you didn't know the movie in question was titled Warm Bodies, and didn't know it was a romantic comedy about a zombie who becomes enamored with a girl with a pulse, wouldn't that description sound just a teensy bit reminiscent of WALL•E?