Keira Knightley, Atonement
Keira Knightley's gorgeous emerald dress in "Atonement" had a few different backups due to the frequent ripping from that famous library scene. "I probably broke them all," Knightley recalled in an interview. "You can't have a sex scene in a dress like that! It was all laser-cut in the front, so literally, if you touched it [it ripped]. They had so many [backups], and the tops had to keep being resewn and redone."
Jake Gyllenhaal & Heath Ledger, Brokeback Mountain
This 2005 gay cowboy romance flick went down in cinematic history as one of the most controversial but also one of the most-watched films of all time. The modern love story between Heath Ledger and Jake Gyllenhaal was shown onscreen unapologetically to a shocked audience and is still one of the most notable films of both actors' careers. Not only was it well received, but it also paved the way for more LGBTQ-friendly films.