I know what you're sayin... and kudos for not compromising... but I recently interviewed for a job as an instructional designer (creating elearning courses) and it was pretty fkkn awkward when they asked to see an animation sample and I had a hard time pulling something up that wasn't a toaster pastry cock joke...
Build two portfolios is all I'm sayin, bro.. :)
Pop-Tart
Since you're trying to do design for a living now, maybe you should disassociate 'these' sorts of drawings from your IRL name? If a potential employer does a search online for your past projects... oh god, duder.
Ya need a moniker, brother.
JoSilver
Perhaps you are correct, I mean I am looking for work potentially as a graphic designer but honestly that's not what I want to do. I'm a computer science major, and I love to code as much as I love to draw and animate.
Regardless at the moment these sort of drawing are my best work to date (or at least I think so anyways). However, I think on a completely objective level, they'd find I'm certainly competent in design and know my way around things like Photoshop, Illustrator and Flash, and am certainly better then most people at it.
In short though you are correct, but I feel using a fake name is cowardly. I'm proud of my work and if I ever get big and famous or whatever the last any of it will be is secret to be thrown back in to my face.