The thing I'm most excited about is being able to easily develop apps for my new Evo. I'm currently slinging a Palm Treo Pro, and developing for Windows Mobile is difficult and expensive. Android + Java = happy me.
Heck, with Android's integrated scripting environment, I can do development for my phone on my phone. Android + Python = extra-happy me!
(Not to mention Google Sky, an autofocus camera with such high resolution I can use it as a portable scanner, front-facing camera so I can Skype, etc. etc. etc...)