Here's a couple U2 covers from the fantastic tribute album In The Name of Love - Artists United For Africa.
This album is one of my favorites and I'd strongly recommend it to any fan of U2 and/or covers.
Some may consider this heresy... but I like this version of Beautiful Day by Sanctus Real better than the original!
Pride (In The Name of Love) by Deliriou5?
Sunday Bloody Sunday by Pillar
I won't post all of the songs I love from the album. But if you care to check my other favorites out here's a few more. Gloria by Audio Adrenaline, Where The Streets Have No Name by Chris Tomlin, When Love Comes to Town by Todd Agnew, and One by Tait Band.