Om Nom Nom Nom...

Random.

Anyway the songs of the first and last vid is by Parry Gripp, a singer/songwriter who takes random words and phrases and turns them into cant-get-it-outta-my-head jingles. Don't say I didn't warn you!

http://www.youtube.com/user/ParryGripp

The middle one is a tribute to TF2's Heavy =)