That was from the Mahjong game Super Real Mahjong Part IV, from its
intro... I altered it slightly :) The heart is done with the Ace of Spades from Windows
Solitaire, would you say? :) It's a transparent gif, but the table above has the
original background so you see it properly. You can check the original version,
in case you want to alter it to say something else than Pi. There is
also a shortened version which plays better animation, at the cost of some missing frames.

Cause in the end, chicks really dig Pi! :)