• In the 2008 Breckenridge Festival of Film Awards, Luke won Best Supporting Actor for War Eagle, Arkansas (2007). He was tied with film co-star Dan McCabe.
• Grimes and Brothers and Sisters co-star Rob Lowe both come from the town of Dayton in Ohio
• Jeff Buckley is Luke’s ultimate favorite music artist.
• A bit intoxicated, he was once thrown out of a club after mooning Lindsay Lohan.
• Apart from acting, Luke is also a drummer for the alternative country band Mitchell’s Folly, whose members are also his close friends in Los Angeles. It was in his church that he learned how to play the drums.
• In Spring of 2009, Luke, together with Russian supermodel Natalia Vodianova, appeared on the cover of V Magazine, which gave him the title: “The biggest movie star you’ve never heard of!”.
• It was in the birthday party of Mischa Barton that Luke met his publicist Craig Schneider, who helped him start out in the acting business.
• Grimes auditioned for roles in Twilight including Edward Cullen, the character of Robert Pattinson, who has been compared to him because of their similar looks. He also lost the part of Elvis Presley to Jonathan Rhys Meyers in the CBS TV movie Elvis.

thanks to tv.com for these.