Can you easily view UltraViolet Digital Copies through AppleTV?

[JuryDuty]

I enjoy a lot of digital copies through iTunes on my AppleTV, but so many Blu-rays are now coming with UltraViolet copies.

I've avoided using UV copies up till now after having a horrible experience trying to get one UV movie to work, going through multiple sign-ups, etc.

So a few questions to anyone who has used them recently:

1. Have they ironed out the UV experience so it's easy to do now?
2. Can you easily view UV's through AppleTV (and how?)?
3. Do UV's still expire after a couple years?

TIA!