I'm looking for examples of marketing strategies that worked worked and why. And if numbers are included that's always good too …

If you are talking about online marketing, then there are some sites where you can learn about your competition. Try spy-fu.com. It used to be free, but now you have to pay to use it. It lets you look at the keywords, bids and other information about other companies online advertising. It's pretty cool.

As for strategies that work, here are a few to get you started:
1. Capitalize The First Letter Of Each Word – people are more likely to click
2. Never say "Save 30%". No one cares. Give an exact number, like "Only $199".
3. You can't say Best, but you can say "unbeatable".
4. Always run a few ads and decide which one brings in the most sales
5. Use analytics. You can get a great analytics program for free from google. Try google.com/analytics to sign up
6. Join an affiliate program. There is usually a sign up fee, look at "commission junction" for example, but after that fee, you only pay a commission on sales, so you only pay if you are making money. It's a win win :)
7. Lastly, Google, Yahoo and MSN all offer tools for you to find keywords… Use them, but with a grain of salt. Those tools are not designed to give you conversions, they're designed to make money for Google, Yahoo and MSN.