Filming is one interesting topic, maybe what makes the Skate games even more entertaining. Most of us (some of you skate, I particularly ride bmx) get the ideas from real life videos and that's what helps the most I think.
Of course watching other skate game videos helps too.
Now that I think about it, I think I've never saw a skate game video filmed like this:
A bmx park video filmed from a RC Helicam. (7D attached to a RC heli, I'll post the pic below).
SKy high angles might not work because the board is usually under the skater, people do like to film from high "diagonal" angles though, at least, I've seen it.