My host sister and I went out to dinner with the family of one of my host sister's friends. I mentioned that I was a big DBZ fan and the father asked me if I knew who sang Chala Head Chala, and I was like "Kageyama Hironobu!" He told me that Kageyama Hironobo lived in Osaka (where we were) and Kageyama Hironobo's father worked with him at the hospital he worked at. Then he offered to get Kageyama's signature for me.
I thought it was just him being polite, but later on in the mail I got the signature. The image below is a scan of the signature, the text reads:
"To Risa (signature) Nice to meet you! Dragonball Z 8/24/2003"

Here's the letter from Mr Nakayama (my host sister's friend's father). It reads "Risa (sama). Today I received Kageyama Hironobu's (The DBZ singer's) autograph and I am sending it on to you. Please take care of yourself. Nakayama Takayuki & Machiko"

Well... pretty cool huh? I wish I could have met him too, but that's probably asking a lot. Mr Nakayama also mentioned that Kageyama would probably be really pleased to hear that he has fans overseas. I don't know why, but just the fact that he knows we're out there is pretty cool. ^_^