See Emoji And Other Fonts On Your Android Device
If you want to be able to see emoji iPhone emoticons on your Android device as well as see other fonts which currently show up as square boxes, XDA forum member Mahlhavoc has written a tutorial on how to do this.
You’ll need to download Font Changer for root users (free in the Market), a root explorer and a couple of files provided by the XDA member. Follow the instructions, reboot and voila.
The solution lets you see a lot of fonts and emoji which helps out on games such as iMobsters and also should make emoji readable if received from an iPhone.
For the full details, take a look at the tutorial thread.