I have Empire on my PSP, and I also have it on DVD, so I decided to do a little experiment:
I'm gonna play them both at the same time!
Of course, the one on my PSP is the '04 version, and the one on my TV is the theatrical cut, so I'm going to see how long it takes before the SE changes take over and brings them out of sync.
Here it is in action!
http://www.youtube.com/watch?v=YWjPPxNSFU0
Sorry it looks like it was filmed by an eight year old. :-p