Those who consider rock posters adolescent are clearly oblivious to the imaginative, often gossamer and intriguing creations I have seen.
The budding business of concert posters as art has made for some impressive posters that would shame any 'Nirvana 1991 Tour' poster and, in limited printings, they won't be seen in every home around (unlike the ubiquitous vintage Euro ads). In fact, these artistic iterations would look grand in my modern, urban, organic apartment. Or something.
Concert posters at Option-G, The Heads of State and The Small Stakes.