An easily remembered pre-takeoff check just before you take the runway (power checks complete already). Have a large cigar and pat yourself on the back if the following are all checked !
Controls
Instruments
Gas (mixture, pump, selector)
Attitude (flaps, trim)
Radios (comm & nav)
Works for most light singles and is great for those times when time is of the essence and (or) the checklist is suddenly nowhere to be found