Handshake 2.0 offers you Valentine's Day greetings in the form of a Parametric Valentine created by Handshake 2.0's Web 2.0 Developer. 

Highlights of this .pdf on how Mathematica was used to create the image include "We are about to create an image that students will encounter in virtually all math curricula. It is so common, though, because it is a perfect combination of mathematical elegance and a very recognizable result," "So let's graph it!", "To pretty it up, let's add another parameter," and "Let's get nerdier."

"For a truly astounding array of heart-themed math (in 3D!), we direct the curious user to Wolfram MathWorld."

Handshake 2.0's Web 2.0 developer is the author of the Parametric Hand Turkey, created using Mathematica, and listed on the Wolfram Research News & Events page.