The games have better graphics and load times, which is cool, but what I love most are the games. I feel that the last gen consoles mostly focused on online shooters, as far as innovation goes. I love shooters, but I felt like other genres were forgotten about. There were some great exceptions though, such as Dragon's Age, Demon's Souls, Diablo III, Dead Island, Bioshock, The Last of US, and some others. Horror was all but forgotten about. There was one Silent Hill game, but I wasn't too into it. It had some cool shit, but the monsters were dumb. The PS4 has been putting out some really good horror, such as P.T. (which is free and scared the shit out of everyone), The Evil Within, Alien Isolation, Outlast, Daylight, and some others, and the PS4 hasn't been out that long.
I love Borderlands, so I might have to pick up the Handsome Jack Collection. I saw a PS4 in Target yesterday that came with the remastered The Last of US. That game was awesome on the PS3. One of my favorites.
It streams fine. I haven't noticed any difference with movies to be honest. I stream on my X360, PS3, and my PS4 and it's all the same.