I am, personally, not a big fan of U2. If I remember correctly in an interview once one of the band members said somthing along the lines of "I always thought our music was devine". Though I cant back that up, I do remember reading it at one point.
That being said, there was a band, ADD I believe, that covered Achtung Baby and did an exquisite job. Much better then the origianl, IMHO.