When Eric Clapton gave us his acoustic version of "Layla", those of us too young to have been blown away by the strength of the original, were delighted and caught off guard by the acoustic, showing the strength of the songwriting. The same here applies, in spades with this peek at how U2 has been re-imagining some of their most beloved songs. They sound good no matter how you slice and dice them when the fundamentals are already so great. It seemed strange to have Letterman in the mix, but he truly is a fan, and we can enjoy his sense of wonder, and believe it. Letterman isn't there out of irony or comedy, he's there to learn more about one of the top 5 rock acts of all time. The piano version of "One" is worth the trip alone. Bono is self-aware here that he's a handful, while The Edge stands out as an endearing elder statesman of rock,

David Letterman brings a sense of wonder and awe to the city of Dublin as he interviews Bono and The Edge in between live performances that take place mostly in a small theater with The Edge on acoustic guitar or piano and Bono singing accompanied by a cellist.

The pair are a massively talented song writing pair who explain their origins, meeting as teenagers with a shared love of music.

The first major hit was Sunday Bloody Sunday which I immediately recognized when The Edge demonstrated his composition of with the first few chords on his guitar. A partial version is shown at the theater, as is the haunting tune, Bad.

Letterman is as witty as expected with his funny interactions with the Irishmen.

I loved this documentary but I wish that more of the concert was included in the final cut.

I admit that I am as prejudiced as one could be, so take my 10/10 with a grain of salt. I love Ireland, I love Dublin, I love U2 and I like David Letterman. So watching this film, seeing places I know and love with U2 talking about their music and others talking about U2 it was unavoidable that I watch this, unavoidable that a few tears came to my eyes and unavoidable that I like this film. If you do not know Ireland but are a U2 fan you should enjoy this film as well, but you will not understand a few of the connections. And, if you have never experienced real pub life and music in Ireland, I beg you to do so as soon as possible. Then watch this film. It's not just about U2. Sláinte.