I have an Olfa rotary turntable mat that works great. I'm not sure that's the one shown on Simply Quilts, but it works, and it's on sale at Joanns.com right now for about $26.00 : http://www.joanns.com/catalog.jhtml;$sessionid$J35GEWYAAKKVKP4SY5NBHOR50 LD3OEPO?CATID=136095&PRODID=102600&source=search
They also sell the acrylic rulers. If the show was the one with Eleanor Burns, she also sells the Quilt In A Day rulers on her site:
http://www.quiltinaday.com/shoponline/rulers.asp
good luck!
sue