I can't leave myself a voicemail!

So, I was reading an article on the The Unofficial Apple Weblog about tricking your voicemail into using voice recording data that one has hacked onto the iPhone. It occurs to me, "do I really need to do all this hackery? Can't I just call my phone number and leave myself a message?" Apparently, not! When I call my own number, I go directly to voicemail but as a user instead of as a caller. No leaving myself little reminders that way! Bizarre, eh? Anybody know a way around this that doesn't involve SSH or terminal or other black arts?