Salutations and Concluding Remarks

I always struggle with how to address people and then how to conclude in letters. Fortunately, there is Google.

Some of my found favorites:

Start the engines
May the forces of evil get lost on the way to you front doorstep.
May your teeth never be replaced by freshly ironed wool socks.
May your mouth never be conquered by a band of marauding Vikings.
May you never have your soul absorbed into the Netherworld by a power-hungry televangelist.
(*wave flags down and down-right) (*wave flags left and up-left) (*wave flags left and up-left) (*wave flags up and down) (*wave flags left and down) (*wave flags up-left and right) (*wave flags down and up-right)
May your mother's cousin never be assaulted by Attila the Hun at the supermarket.

...such treasures...

http://www.listology.com/list/every-single-way-say-goodbye
http://resourcesforwriters.suite101.com/article.cfm/list_of_letter_closings_and_salutations