My mother loves frogs, so I'll definitely be making this tree frog of the amigurumi kind for her this Mother's Day (the 2nd Sunday of May, here in Australia).
I think this one must be Kiyoshi's girlfriend.
Isn't she a cutie?
~ Edited October 2010 ~ Unfortunately, Katrina's website is no longer active.
While the wayback machine has a copy of her site, the pattern files were in pdf format and stored with geocities (now defunct), and I've been unable to find copies of them.
I've put together this nifty conversion chart to refer to when working with online patterns, because they always seem to be in the wrong type of sizing for me.
Feel free to print it out and keep it someplace handy for reference.