Live music is in my top five of Fave Things To Do Ever so I've been to many many concerts. My dad ran the sound for a local university's convocation center when I was growing up so I saw a lot of concerts there for free.
Off the top of my head -- Amy Grant, New Kids On The Block (when I was 9, when I was 29, and when I was 32!), Newsboys (2x), Alan Jackson, Trace Adkins, Steven Curtis Chapman, Rascal Flatts (3x including when they were opening for Jo Dee Messina back in 1999), Beach Boys, Chicago, Barenaked Ladies, Blues Traveler, Taylor Swift (when she was opening for Rascal Flatts), Dave Barnes (3x), Andrew Peterson, Bebo Norman, Nichole Nordeman, Kelsea Ballerini, Relient K, Jo Dee Messina, Sugarland (got to meet them backstage because an old scrap friend is friends with Kristian's wife!), Michael W. Smith, Five Times August (got to meet him & get a picture), Third Day (2x), Plus One (2x), Andrew Ripp, Lady Antebellum (before they were popular -- saw them at the Nashville Marathon closing ceremonies) Marc Broussard (2x), Boyz II Men (2x), 98 Degrees... I'm sure there are more!
I have a concert bucket list, too, which includes Lionel Richie, Lifehouse, Justin Timberlake, Beyonce, Maroon 5, Miranda Lambert, and the Backstreet Boys.
Lifehouse will be in Indy (with Switchfoot which is another band I like & haven't seen in concert) at the end of August so I'm trying to find someone to go with me. Everclear, Vertical Horizon, & Fastball will be here locally at the end of next month so I might try to snag tickets for that, too, if I can get someone to watch my kids.