You only have to go to the corner of 15th Street and New York Avenue NW to find the proof of Obama-mania. The Washington Post’s Inauguration Watch blog recently posted about the Pres. Elect Barack Obama souvenir store, which just opened on Monday, owned by Jim Warlick, a man who has made a lifetime career out of selling political memorabilia. The store is overflowing with your typical t-shirts, mugs and buttons, with a more expensive…