A lot of good ones already listed...but a new one for us this year will be The Anthem by the Planetshakers. We are looking at doing a skit with it having someone as Mary, Mary Magdelene, Roman soldier who witnessed Jesus death all share their testomony and have them sing words to the song and build off of each other.
This isn't really an "easter song", but more of a Good Friday song...fits the time of the year though. Third Day's "Thief". Powerful lyrics. :-) Don't get to play it too often but when we do I always love it.
up tempo: Happy Day! Gotta love that one!
My Savior Lives (desperation band/New Life worship)
I've Found Jesus (delirious???)
slower: In Christ Alone (Getty/Townend)
(I love "Rise Again" and "He's Alive" as well - was raised on songs like these. In fact, if I had been a boy, my middle name would have been "Dallas" b/c Dallas Holmes was so influential in my parent's faith as they came back to the Lord.)