It seems that Thomas Jefferson has catalogued his personal library on LibraryThing, complete with 'reviews' extracted from his correspondence.
There's a hip-hop video on YouTube (actually from WhiteHouse.gov, but YouTube is trendier) on the early life of Alexander Hamilton - about a year old now, but still worth watching.
John Quincy Adams has a Twitter feed, derived from his diary entries for 1810.
And there's a new strategy game in the works, Founding Fathers, about the Constitutional Convention of 1787.
Once known primarily as political wonks, the Founders are fast becoming Web 2.0 and boardgame geeks.