Knitting seems to be going in circles these days. Elizabeth Zimmerman pushed knitting in the round to new heights in the last century and now it is coming full circle. Circular needles are easier to knit with.
Sandra McIver stopped the knitting world with her Swirl Jacket. Nicky Epstein has enough circular patterns for you to be spinning for a while. Then there is Daniel Yuhas who knits from the center out and has an exciting way of knitting socks.
So if you have steered away from going in circles, you may find you are missing out. Look at the list for more information and a free Pi Shawl pattern of Elizabeth's.