Assorted links

1. Is Viagra bankrupting Brazilian pensions?

2. The decline of the super-rich.

3. Markets in everything: North Korean restaurant comes to NYC.

4. Brahms Complete Edition, 46 discs for $62.

5. Via Chris Masse, Hal Varian on how the web challenges managers (for the video version click on "launch interactive" and "all videos").  Chris also refers us to the Avatar trailer, which he describes as the best science fiction movie ever.

6. The Singapore model: sign me up too.