I am still not clear about how different the extempore speaking is from answering regular questions on current affairs? Can it be approached just like a normal question requiring detailed and slightly more in-depth answer as duration of response is longer.
Is the IV panel engaging in discussion in between or it is more like 'candidate holds the stage for whole 3 minutes'? If latter is the case, then nothing except knowledge of the subject will fly. For most topics, candidates can always bring in Indian perspective to take up a minute, which will be slighly easier to present coherently. For such i/v tactics, content may be low on technical details but should be strong on coherently organized thoughts, logical & streamlined processing of facets of the issue at hand and cover up as many angles as possible. For instance, for current financial crisis, there is subprime angle, there is Derivatives and Hedge Funds angle, there is liquidity crunch and solvency issue, from country perspective one can discuss the role of EU, China, developing countries etc. From verticals perpective, one can touch briefly on manufacturing, IT/ITES, commodities, bullion, forex markets etc. I am sure IIMA will look forward to teach us all the technicalities, they just need to see that we can learn.
Some probable i/v topics were listed in earlier posts on this forum. I am making a quick list here, making use of free first half in office

:
1. Current churn in financial markets
a. Your take on (of course noone can predict, so it is more of thought process assessment again)
i. how long this downward trend will last
ii. Will it result in full-blown recession? If yes, how long.
iii. Impact on India and Why India is likely to be among the least imp
iv. Impact of/on China? Can we emerge closer to China after this downturn?
v. What is crisis similar in size to US crisis reveals in EU? Why their response will be different and how it can harm world markets?
b. What companies can do in this environment to emerge poised for better growth when the economy recovers?
c. RBI's response and your rating of the same
d. Impact on IIM recruitment scenario/your decision to study? I belive it is good for HR in India & this is the best time to study.
e. Do you think Indian banks' strategy of not going for cheaply available assets is justifiable or we are just being too defensive here?
f. With $700b bailout package approved and deficit in US widening to almost 10%, $ is expected to go down and analysts are expecting a run on $. Why is it still rising against the Re?
g. Lower in the food chain jobs were being outsourced from US citing keeping high end work like inv banking in US as one reason? Now what?
2. Why our growth story has not been able to break out of the mould of being an export driven story?
3. What should Indian companies do to move up the value chain in most industries? We still export huge chunk of cotton we grow!!!
4. Do you believe India can be future superpower? Financial first and political later.
5. Opinion on Nuclear Deal. Is it good or bad? Was the right to test an important one to loose or it was irrelevant in global situation?
6. Price of Petro products/differential price of diesel being mooted by govt
7. Is manufacturing of new Alto (A-star)/i10/i20 for world markets a sign of better times for Indian Auto sector? Can we be the hub for manufacturing for small cars to start with?
8. Tata Nano mess:
a. Why TATA chose Singur and conditions that led to their exit?
b. Whom do you hold accountable and to what extent?
c. Why all ancillaries need to be with main plant (clustering)?
d. Why do you think ancillaries are moving with Tata, even at significant cost? Besides the obvious, they also are using same technological and cost improvements for other auto mfrs as well.
9. How do you see M&A/FII/FDI scenario in & out of India for next couple of years?
10. Which 1/2/3 things you will change on priority to make India a better business destination (India is ranked among the lowest even in S Asia, per recent UN report)
11. What should be the role of govt in financial markets and economy in general? Where should it stop, moreso after the no-holds-barred model of US capitalism has collapsed?
12. If you were to open up 1/2/3 sector for complete FDI, which will be it? For me, it will be education, power & ground transport (in that order).
13. Typical stuff like Manager vs leader?
14. Expect questions on competitive strategy for industries you work in. Challenges in everyhting from market segmetation, winning business, capital budgeting, m&a environment, cultural challenges in global environ might pop up (depending on your role and role you aspire for). You can use Five Forces model, balanced scorecard and similar concepts to direct discussion.
15. Are SEZs really the way to enhance our businesses' competitiveness in global arena? Your thoughts on whether it is likely to work or not?
pls ignore the typos, pls keep adding to the list.