The only thing we haven't seen much of? Good goaltending.
For most of the season it was the biggest question with these two teams, and a rather large talking point when neither did anything to upgrade its perceived weakness at the trade deadline. In the end, of course, they didn't really need to, as both Antti Niemi and Michael Leighton stepped up for Chicago and Philadelphia respectively, backstopping their teams to this point.
Through the first five games, however, it's appeared to be a goaltending optional series, as the two teams have combined to make this the highest-scoring Finals series in decades.
Blackhawks vs. Flyers Series Page
Leighton has already been pulled on two separate occasions in the series, and his .866 save percentage through five games has been a sizable drop from the .947 mark he registered in the opening three rounds. Niemi hasn't been much better, with a .833 mark, down from the .920 he had against Nashville, Vancouver and San Jose.
How does that performance compare to recent Stanley Cup Finals goaltenders? Not very well.
Since the lockout, we haven't seen goalies A) perform this poorly in a Stanley Cup Final or B) have that much of a drop-off from their performance in the opening three rounds. It's certainly made for some exciting hockey, though.