Smooth Apps

There have been a lot of post talking about how much lag there is on powerfull phones. I think a lot of that has to do with how apps are designed and programmed. I wanted to share a few apps that I think are some of the smoothest apps.

I have a Galaxy Nexus and these apps are the smoothest one.

Google Currents

Reddit Sync (dev version 8.0.6+)

What other apps that are really well designed and smooth out there?