The entirety of Thank You, A new year and 50000 Subscriber Special, where Mark shows just how much he's happy about what he does, and how happy he is to have his audience, and how thankful he is for all of them to help him get where he is now.
All of his "thank you" videos are very heartfelt, particularly his 1000th video special. In "Draw My Life," Mark really goes in-depth into his pre-YouTube home life and his motivation for making videos.
His video when he reached one million subscribers is very low-key, showing a montage of some of his best moments while he talks in a very low tone about how much the channel and his fans mean to him.
During his Dead Space 3 walkthrough, when who enters a bunker, he encounters Buckell who, moments later, dies from hypothermia. He expresses that he liked the character and is quite sad that he had to die. Whilst he isn't really devastated, its nice to know that Mark at least shows that he has some care for the guy. Especially when he exits the bunker, he states that he will not even try to stomp Buckells body, even though he greatly distrusts dead (or supposedly dead) bodies.