Its a weird one.
The footage that worked was shot in a forest! We did a pop music video that involved around twenty set ups being shot in slo mo and of these they all came out well.
The stunt work was shot in a locked down shopping mall after it closed. We were allowed in and shot the regular footage for two hours then did some stunt work (some one running, getting shot and diving onto a crashmat) which we decided to shoot slo mo. Usually I prefer to shoot 25p (UK frame rate) and drop into AE CS5. I curse the day some one suggested shooting directly in slo mo!
We are arranging a reshoot as I write this. Luckily I got the venue for free.