Here's my password...b75a797f-0b1e-48a2-8d90-0c3c65c04769
I made it up just now using this...
http://www.uuidgenerator.net/version4Generate the version 4 type for max randomness...and check out the probability of generating a non-unique identifier..."The probability of one duplicate would be about 50% if every person on earth owns 600 million UUIDs."
http://en.wikipedia.org/wiki/Universally_unique_identifierTake out the dashes/replace dashes with some other character/move the delimiters around/combine uuids/some other variation to boost randomness.
You can remember these long sequences in about 2 days...just write them out 20 times every couple of hours on the first day, and then 2-3 times on the second day. Then write them out about 2x per day about every other day to commit to longer term memory. Use a pen and paper - and cover up the last sequence you write to avoid the temptation to copy