I just finished knitting my little Mario Star and he turned out better then I had hoped.
I used the pattern from http://www.modadea.com/patterns/LM0240.htm.
I downsized the needles to size 4.5mm and used an acrylic worsted weight yarn instead. The eyes are embroidered by hand.
(His date, GIR, is shown here in his own topic http://www.craftster.org/forum/index.php?topic=222614.msg2402521#msg2402521)
Thanks for taking a gander!!