My favorite sites, two by two

Top 2 most interesting business links:

Buffet’s Collected Letters to Shareholders
Warren Buffet’s letters to the shareholders of Berkshire Hathaway. More than just a stock picker, Buffet is the epitome of long-term value investing. The letters are pleasantly readable to boot.
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Google's S-1
“Don’t be evil. We believe strongly that in the long term, we will be better served—as shareholders and in all other ways—by a company that does good things for the world even if we forgo some short term gains.” This deserves applause. Of course a booming online ad industry and an doubling of their IPO price give reason to be optimistic. Perhaps one dark cloud on the horizon is the fact that insiders are selling shares like mad (for example, Larry cashed out an eye-popping $213,360,000 worth of shares in a March 14, 2005 sale) In any case, the “Letters from the Founders” is a refreshing read.
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Top 2 “discovery great new things” tools

Last FM
Last FM takes Amazon’s “people who like X also like Y” approach to recommending new musicians to a new level. Among other things, Last FM installs a tiny plug in to iTunes and keeps a “weekly chart” of what you are listening to. It also lets you create your own personalized radio station based on what you have listened to.  Your personalized radio station plays stuff it knows you like, and stuff it thinks you might like.  If you love to discover good new music, this is your site.
My page here
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Del.icio.us
Don't let the slightly lascivious name fool you, this is just an innocent public bookmarks site.  What makes it great is that it lets you keep your bookmarks on their website, and view the bookmarks of others.  It also offers a perfect lesson in the power of tagging.  The "popular" link, which keeps tabs of which sites are bookmarked the most that day, never fails to unearth fascinating new things.
My bookmarks here
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Top 2 Physics links

MP3s of Feynman’s Lectures
You mean to tell me that all the people walking around with iPods aren't listening to physics lectures?   Well they should be. Widely considered the 2^nd best physicist of the 20^th century, and far and away its best teacher, these lectures are fascinating and accessible to non-science types.
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PhysicsSongs.org
Yes, songs about physics. One part goofy, one part great, Professor Walter Smith has collected dozens of songs about physics from musically inclined physicists. He also has recorded several of his own (full disclosure: Walter is a mentor and former professor of mine.  While I learned a lot from him, somehow I never was able to approach the genius of:
“These seven crystal systems form the fourteen Bravais lattices.
They’ve hardly anything to do with artichokes or radishes –
They’re great for metals, minerals, conductors of the semi-kind –
The Bravais lattices describe all objects that are crystalline!”)
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Top 2 brilliant applications for the internet

Skype
“Internet telephony that just works.” Skype combined with a $14 headset is so wonderful that you will end up pestering all your friends to sign up.  Skype combines instant messaging, peer-2-peer file transfer capability and telephony all in one slick application.  My cell phone usage is down 40% in the past few months. Great for group work. My only gripe is that you can't play music when someone is on hold!
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Flickr
Bought by Yahoo last week, Flickr has emerged as the best place to share and organize photos on the net. If Yahoo doesn’t infect it with its “we barely meet our customers expectations, nothing more” attitude, Flickr should continue to roll out new, innovative features that leave the commercial sites looking overexposed. (get it?)
My hazy cameraphone pictures are here  
Mind-blowing mosaics here  
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