First and foremost for me would be Reba McEntire. I've met her like 4 times, and she's always really sweet and nice. You can tell she truly appreciates her fans, because all 4 times she actually stopped and chatted with me for like 10 minutes or so. Great one, this lady!
Second... Demi Moore. I met her one day when I (more or less) accidentally bumped into her, and we laughed about it for a couple minutes, then I got her autograph and she was on her way. She was really down-to-earth about it, and was even the one who apologized first!
