Reflectionsmeet have covered A Night Like This. (Thanks Phil)
"Kill Hannah covered "Just Like Heaven" at their annual show, New Heart For Xmas." (Thanks notdeadyet)
JES covers Lovesong. Here's the video, and you can get the 8 track EP at Amazon and iTunes. You can also read an article about it, with Robert's comment on the song, here.
(Thanks AndrewV127, Justin, Andy, Monghi, and Heron)