Michigan's takes the cake for B O R I N G.
There have been some real clunkers out there, hasn't there? I believe each state had its own method for picking the final design. Here in Cali-phony-a, there was some kind of ballot that, of course, wasn't terribly well publicized.
I personally would have liked to have seen an outline of the state with a giant crack going through it to symbolize the San Andreas Fault and our ever-occuring earthquakes, but what do I know?