My hobby is collecting autographs. I started doing this about 15 years ago, and then got out of it. I just started collecting again. Some of my autographs were obtained in person, some were purchased from reputable dealers and some were obtained through the mail by writing to the celebrity.
I sent a letter, SASE and an 8x10 to Mr. McCallum via the NCIS studio on Oct. 13, 2010. Today, Dec 18, 2010, I received my 8x10 back signed and personalized. Mr. McCallum also included his own signed 8x10. Very nice success!