When i used to go to an arcade I was usually drawn in by the demos that the street fighter, soul calibur, and the tekken game machines usually put up to attract people. The game demos usually had that wow affect when it show these massive chain combos that totally obliterated the other characters. It was extremely awesome to see. Here are a few videos I found to show you what I mean.

some videos cant be posted for some odd reason so here is a link.

http://www.youtube.com/watch?v=EcG-iG0P0gc

http://www.youtube.com/watch?v=Em3U26KhtHk