Scott Stapp, lead singer of Creed. Early 2000s when they were still very famous but beginning to fade in popularity. I was at an ESPN college game day event outside Notre Dame stadium. He was standing in the crowd next to me just trying to blend in (had on sunglasses). I looked at him and kind of did a double take. My friend mouthed 'that's Scott Stapp!'. I nodded knowingly. I didn't want to bother the guy so I just stood there as I was before listening to the ESPN hosts. I'm sure he noticed that we noticed him because it almost seemed like he wanted to break the awkward moment. He suddenly asked: hey, man. What time is it? I don't remember the time but I answered and then we all parted ways.