I wanted 35mm tires on my bike. Which was a problem, because there wasn't nearly enough clearance for both the tires and fenders. People who know me can tell you that I hate compromise in all it's forms, and I really wanted fat tires and fenders! This required a little creativity, but as you can see, I made it work.
This photo also illustrates some of the other compromises I refused to make; that the sealed cartridge headset I insisted on didn't leave room for a brake hanger, and that the front rack I got from Velo Orange didn't reach the canti bosses without putting the rack at a funny angle (sure, I could have mounted the rack from the fender eyelet of the fork, but that would have been a compromise!). A fork mounted brake hanger solved the first problem, and the folks at VO helped me solve the second. They sent me a rack strut from their rear rack, which is a bit longer, and after bending it to the proper angle the problem was solved. I was really impressed with the folks from VO for helping me figure this out.