People get my last name wrong so often that I've thought about getting my name legally changed just so I don't have to deal with it anymore:
Dave DeLong <<Capital L, no space!!
8)
[edit]And by the way, I used to live on Sweet Farm Road, not Sweat Farm, not Sweet Fram, not Sweet Farn! Sweet Farm!
And another funny misnomer incident: My dad got a letter once addressed to "Capt. Dr. R. Peter P. DeLong Jr. Jr." At least they got the last name right.
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Dave