This fall, PSY’s “Gangnam Style” quickly became one of the most watched No. 2 Hot 100 hits ever as fans wondered if it make it to the top. As the Korean sensation’s horse-dancey smash drops to No. 5 after a seven week residency in the second slot, we’re paying tribute to it with this chart of the top 40 tunes that peaked at No. 2 on the Hot 100. From Lady Gaga and Destiny’s Child to Shania Twain and Green Day — and even Elvis Presley — sometimes it doesn’t take a charttopper to make a huge hit.