Danny Choo spotted this home-made live-action version of the K-On! ending theme, "Don't Say Lazy," and although there are some haters in the comments, I think it's pretty badass. It's clear that the creators went to a lot of effort in terms of costumes as well as, as much as possible anyway, editing.
I have to say, I'm not especially into Mio, but of the four girls int his video, she and Tsugumi are my favorites. How about you?