The cast of those wonderful ” Hunger Games ” movies, you guys — Jennifer Lawrence , Josh Hutcherson , Liam Hemsworth , Julianne Moore , Jeffrey Wright , all those lovely people — they’re not just a bunch of pretty faces making great films. No, they’re also conscientious, intelligent actors who use their fame and influence to raise awareness about important causes. You can tell because they just did the PSA about ebola. Man, isn’t it so refreshing when celebrities actually take the time to do good things?