The first is 'Cups' from Pitch Perfect - I had no idea that they made a proper music video for the Anna Kendrick version. It has its own little story and I love the new background music additions, it sounds great. Visually I think it's really enjoyable and well thought out - very impressed.
The second is 'Everything has Changed' by Taylor Swift and Ed Sheeran. I've got the CD and listened to it a lot, but didn't realise they'd done a music video for the song, or that it was this adorable! Love the video idea - and the casting choices.