When I was first told that you can learn from all and sundry, I was quite sceptical, specially the sundry part; but now after joining the banking industry I have learnt that sundry is a very important account, specially when it comes to banking and more importantly the life.
So I took upon a list of things that one can learn from people:
1. SRK: One can learn, how not to talk about subjects which you are not really well versed with; don’t believe me, look at him, he is in far lesser controversies than before.
2. Nirmal Baba: People will listen to any crap advice, and will follow them, if you charge them 10% of their salary. 
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3. Paris Hilton: If you have the looks, no matter what you do, you will be missed, so do spend some extra time in gym & some money on the looks, + look good on whatever you are doing, you might be facing camera, who knows!
4. Abishekh Manu Singhvi: Pay & treat your driver(key men) well, they wont have any reason to put your dirty laundry to dry in public.
5. Barak Obama: Get what you could till you can, you may not get a second term. That Nobel prize is quite a thing you know.
6. Shahid Kapoor: Break up can be a blessing in disguise. Don’t hide in your room, meet new people. 
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7. Saif Ali Khan: Hook up may not always be a blessing.
8. Bejan Daruwala: Well, I was told 7 is lucky for me, so I am stopping here. Hope you gain something too! 
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9. Shashi Tharoor: Don't comment on something, using phrases which do not match up with local sensibilities, you might have to give up your elite position and join the cattle club.
10. N D Tiwari: You are as young as you make your body feel.