Here's the link to the om t-shirt.
However, there are days when this t-shirt: offensive t-shirt
is much more how I am feeling. (May be offensive to some - contains the F-word) There are a ton of great knitting logos (for t-shirts, hats, bumperstickers, tote bags, etc.) at cafe press. Just do a search for knitting and you will get 64 pages of them!