After stumbling upon the Mr. Roger's Birthday Celebration, I also happened upon the YouTube Awards. Massive lunch hour time-suckage ensued. I recommend taking a look at the nominees for Most Adorable. You've probably been sent at least one, if not all, of them already and each one is extremely, well, adorable.
While the winner, a baby laughing hysterically, is pretty darn adorable, my vote would have gone to the otters holding hands.
Sure, it's just an otter survival instinct / technique for travelling in packs on the open water, but when you see it you forget all of that and think that it's just the most adorable damn thing any two mammals in the known universe have ever done.