"Everything about it is a mistake. On the surface, '500 Days of Summer' compared to what's beneath is a minor leaguer next to a major one; the movie is one of the biggest catches of the year"—Score: 4/4, Stephanie Zacharek, Salon.com; "This is the oldest bittersweet storybook, one you may have heard a million times. But when told in a way that is brimming with confidence, giftedness, and a touch of melancholy that blazes a unique trail, '500 Days of Summer' feels almost like hearing it for the first time."—Score: 3.5/4, Lou Lumenick, New York Post.
"A surprising, incredible movie that will have a very big impact on me and my life; really, it changed the way I see the world. A toast to this day! I've found my favorite romantic comedy, and one of my favorite movies. Some might say I'm overreacting, but when I stop to think about the faults of '500 Days of Summer,' I can't find any, it's just too great!"—Five stars, user Ricardo-D, Rottentomatoes.com.