Elbow,

I have a "cheat card" that has my FF#s and phone numbers for the airlines. I have my US and DL numbers burned into my head, although I ditched US and cut my DL flying down to Silver and NW down to Silver moving my miles to AF/KL's Flying Blue where I hit gold (while maintaining DL & NW silver, so I should probably end up with AF/KL Plat by the end of the year as I credit nothingto DL or NW now).

My United number and BMI number are both on luggage tags which makes remembering them easier (if I look down and read off the number :0) )

And my 420k miles in '05 were BIS, my average of 200k a year now is BIS.