I found Rhett and Link through the rub some bacon on it video. Since that time I have watched pretty faithfully. I really like that they keep it clean so the whole family can watch together. I'm always looking for funny channels that are clean. The other channel I follow faithfully is Studio C.
They have sketch comedy and songs. Here is a parody of the Hunger Games that they put together. http://youtu.be/JXO44xIvyuY