It's hard to say I like JUST 1 app. I have a few. Beautiful Widgets is amazing cause there's soo much customizations that can be done and it's endless amounts of updates and widget settings. Google music is just the best music app ever! I've got thousands and thousands of my songs available to me whenever and wherever I want without sacrificing space on my phone. Amazon App Store, free paid app everyday!?! What more can you ask for?! Favorite game right now would hafta be DeathWorm, talk about mass carnage and destruction!! As far as ROM's go...I can't get enough of Nitroglycerine's Eclipse for the DX2. I love all the AOSP on it! If you haven't tried it, definitively get it! Overall, to me Android is by far the best OS out there right now, I recommend it to anyone and everyone I know. Love it's open source and unlimited development. The community in all the forums i've come across are very helpful and extremely informative!