How to benefit from US stocks plunge after credit rating outlook downgrade by S&P?

Kiasu Investing Rule #3: Always try to pick-up "Cum-Dividend" stocks as close to Ex-Dividend date as possible and at as low an entry price as possible (the ideal is to time entry at the lowest price point between CD and XD dates).
Given the slew of Ex-Div dates that are rapidly approaching, and the timely plunge in US stocks caused by the credit rating outlook downgrade, the coming sessions may present us with a golden opportunity to not only put into practice Kiasu Investing rule #3, but also possibly at an ideal entry point as mentioned in the rule above.
For the benefit of fellow KIs, I have attached two separately compiled list of upcoming dividends for your easy reference.
The first one is from UOB Kayhian shows the list of SGX stocks with significant payouts with Ex-dates in April 2011

The second list was kindly compiled by my broker from CIMB.

Good luck and have fun!