Here is a free potholder pattern from Free-Crochet.com. This pattern appeared in a crochet magazine I bought years and years ago, and I made a number in green and red (the full slice versions) for my mom. She still uses them! The pattern is called Delicious Dining and was designed by Dorothy Moder Frantz. Click here to download the file.
Hey I even had a picture of some of mine in my photo section! Wow, this was a long time ago, maybe 1999 or so...the pattern was published in 1997!