Have a taste of Android or WP7 by simulating them on your iPhone
OSFaker can be easily obtained through Cydia and will do its best to give you a graphical representation of either Android or WP7. For those of you unfamiliar with Cydia, imagine Apple's App Store, but offering apps which were designed specifically to be used on a jailbroken iPhone or iPod touch. Needless to say, such applications would have never made it to the listings of Apple's App Store.
Using the application proves to be pretty simple as it gives you the option to simulate Android or WP7 right after its launch. OSFaker added WP7 simulation in its most recent update, which explains its limited capabilities. On the other hand, the Android simulation includes access to a handful of basic apps such as Facebook, Twitter, Calculator, and Paint. Feel free to give it a try if you are curious enough already!
source: iSpazio (translated) via Redmond Pie
You can download OSFaker from Polarbear's repository