
Day 3 is: Amazon Video.
It's my main streaming service and I really enjoy it. It allows me to watch a huge number of TV shows and films without having to struggle with changing DVDs. Because I'm a Prime customer, I get access to whatever films and shows are available to watch for free. I watched Star Trek: Insurrection last night. I haven't seen it in years and I'd forgotten most of it.
I've bought a large number of films and shows on Amazon Video, and they're always in my 'library' so I can watch them again.
Basically, it's a huge source of entertainment for me and I'm glad I have the ability to access it.