Ok, what would you do?

If you sent a christmas card to someone with their last name incorrectly spelled (and they noticed)?

i would call up, apologoze and laugh it off. no biggy.

Honestly, I probably would say something like 'oh, your kidding?'
I really wouldnt worry too much about it. I did that once and my uncle noticed. I said a quick 'oops, im sorry' and now I know how to spell it and make sure of it.
A lot of people misspell my last name AND dont even know how to pronounce it..