2013 here, my top two nostalgia picks out of those that haven't been direct linked just yet:

A Lullaby For Gods: https://www.youtube.com/watch?v=QKfP9N28buk

How Far We've Come: https://www.youtube.com/watch?v=-Apx1pSs30Q

there's also a ton of just like absolutely early 2010s homestuck amvs and lyricstucks that fall squarely into the nostalgia beam for me, but i don't think i'm strong enough to link those at this moment