In person I'm usually "Dave" (full given name is David).
Sometimes in person my name is
"Toast" (Link is to explanation of how I got that name)
Online I'm usually known as "MrToast"
On my extended family's email list, I'm known as "iDave" (to help distinguish between me and my uncle Dave)
I'm also occasionally known as:
Dave the Pit God (in Robotics)
Dave the Bass Drum God (in Band)
Dave the Zylophone God (also in Band)
Dave the geek (in most social gatherings)
That tall crazy dude who's a total Mac geek
Um, yeah, that's about it.