Catching up on each other's fandoms

So, it has come to my attention (and my boyfriend's) that we have a bit of a gap in our fandom. More importantly, there are a few shows that we have not seen that the other thinks should be rectified. So according to my boyfriend, and Tumblr, I need to watch the following:

Adventure Time

Avatar The Last Air Bender

However, he needs to watch the following:

Supernatural

Sherlock

And finish the latest season of Doctor Who: