It's all subjective but I love the new Gmail interfaces, Hangouts is much better than Talk and keeps getting better. Google+ photos is so much better than Picasa, I love how I can search for 'blue cars' in my photos and it returns them even though I've never tagged any of them.
Android has seen enormous improvements, I love stock 4.3 and Google Now.
Chrome's new 'native' apps wrapper-like thing is neat.
Even Youtube has improved a little bit, they've got a nice nifty ajax loader bar up top instead of refreshing the entire page when you go to another video.
But I guess with a different perspective, someone could argue how they don't like any of those changes. But for me, I love them.