The New York Times has an interesting story titled Mystery on Fifth Avenue. In short, an architect remodeled a living area and turned it into a Rube Goldberg style game, having them go different places in the house to find different clues.
Be careful what you ask for when you talk to the renovator and make sure they don't have any practical jokes or brainbuster ideas in mind... You may may get a headache trying to figure out the clues and hope you don't have to dismantle the entire house to get to the last one.
Obama's inauguration was interesting to watch, but in some cases, security was overkill. I mean, seriously, closing 395 except to local traffic? Close it further up the road before it gets to the bridge. Close 3-4 metro stations, make some exit-only, entrance-only? Good grief... The only thing I can applaud them for is the placement of the Jumbotrons, displaying captions on them.