15 minutes videos of some over excited guy overlayed on or overlayed by lots of cutesy/flashy/cartoony pics, interspected by irrelevant/low-brow-humour "I'm so cool" video segments, padded with tons of fluffy talk and with every silly post-production effect conceivable, to make a point that could have been made in 2 minutes.
I barelly every watch Youtube nowadays, especially if I'm looking to actually learn something or for the solution for a specific problem.