Interesting reading the various comments. Would have to say that all the checklists in the end are not going to solve all the problems. Our checks are almost all done before taxi. Just a short pretakeoff check. Other day - taxied out and held for runway - all checks complete - runway change - redid the numbers - changed them all and the flaps and did the pretakeoff check. All complete - you would think. Taxiied over currently active runway for new runway in line the 6 others. Flap had been selected incorrectly - but when we had looked a the gauge it was correct as it jumped immediately form 15 to 5 ( unfortunately had been set at one) - slower to get there . Noticed at T/O time!!! You read the accident reports and say "How did that happen??? it could never "HAPPEN TO ME" - but it can!!!!
Moral of the story - check and recheck!!!!! despite the checklists.
