Also, I should state for the record that most sim videos weird me out, but I actually love several made by BigMamaG. My other two favorites are You Could be Happy (this one's perfect for watching after Chasing Cars if you get a little teary at the end too), and the awesome and hilarious Harry's Christmas Wish.
Anyway, I linked someone to these, and she enjoyed them so much I thought I'd post about them (again? I may have posted about them a year or two ago...), in case anyone else might get a kick out of them.
Harry's Christmas Wish
You Could Be Happy