I think the 1956 Election is far more interesting than people give it credit for. In this election you can see that the South is finally starting to slip for the Democrats. The Republican ticket wins Virginia, West Virginia, Florida, Texas and Tennessee. Ike is even able to pick off Louisiana from the Democratic coalition. In this respect the 1956 Election says something about the changing political coalitions.
As for uninteresting elections my main candidates are 2004 and 2012.
Both parties were able to get their president reelected while losing independents and those whose #1 issue was the economy. A first for the modern era. That's what makes 2004 and 2012 interesting. I would say 1932/1980/2008 were actually the most boring, because it was so obvious to everyone that the incumbent party had no chance.