I'm an audio guy (tracking and mixing for post pro) and recently (April 2012) bought a 7D. I've been making videos since then and been basically unhappy with most of the results. I was using the camera's exposure metering and was continually getting blown out highs, especially in sky areas. Yes, I know. Schoolboy errors, beginners' errors.
I'd heard about Magic Lantern but wasn't expecting a 7D version so it came as a bit of a surprise. Incredible! Just using the zebras my video is so much better, and the guides are much more useful to me than the standard. The focus peaking has taken out so much of the guesswork and... I could go on, I love this software. Donation on the way. I had no intention of donating but the difference in my results is night and day. Thanks for this, guys.