Riptide by Vance Joy. I'm not really into love songs, but I love the upbeat, acoustic sound. Also Car Radio by Twenty One Pilots. Some of the most thoughtful lyrics I've ever heard in any song.
Hell yes to both those. Those bands have been shaking the Rock-It Sauce bottles for ages, but it's still got some sauce left. Amazing. I saw those fellas live on Saturday and they capped off the set with that and it was pretty cool. People get into it. Currently spinning Pierce the Veil's Selfish Machines. Pierce the Veil add just a little progressive spice to the hum-drum post-hardcore genre and it's fantastic.
ReWel by Tristam & Rogue. Not always in the mood for the genre, but it sure is fantastic hardcore dubstep. Surrender by Tristam. Seriously becoming one of my favorite electronic songs of all time and it wasn't even released.