I would definitely play with the tshirt a little. It doesnt look as clean as say entry #29 or #33. The colors are cool too, although it reminds me too much of a hamburger. Maybe play with this? Let us know what you come up with. You could be on to something!
#38 is fun. The shirt looks good. I wonder what it would look like without the drop shadow and possibly a gradient highlight? Also, I think the tagline would look better with a different font.
Be careful. one of our designers had to pull the t-shirt from inside the "O" because of originality issues. Not very fair, so just warning you. :(
Sometimes what people want to claim as original is a bit petty. I've withdrawn mine for now because of a complaint from the same guy. Will submit some new variations this afternoon.
I think its the outline that's throwing me off. Can yo maybe play with the font/outline of the logo and the colors just a little bit? I love this idea, but i would like to see more.