I'm biased but Pittsburgh-Chicago was a thrilling if short-lived series. I actually thought the Hawks would put up a better fight. Going into the series the Hawks had set a NHL record with 11 straight playoff wins (sweeps of Detroit and Edmonton followed winning the last 3 games of their first round series with St. Louis). The Penguins would match the Hawk record of 11 straight by sweeping the Hawks.
That game 1 was perhaps the most heart-breaking game I've ever seen. For the Hawks to be leading by 3 goals and blow that lead and lose in the last minute of the game...heartbreaking. 5-4 Pens
Then, there was the emergence of Dominik Hasek. He clearly stunned the Penguin stars with his acrobatic saves. It was then that the Hawk brass (i.e. Keenan, Pulford, Wirtz) should have chosen Hasek instead of Belfour and Waite as the goalie to keep.
How about that game 4 where Dirk Graham (the Hawk Captain) got a hat trick has he tried to will the team to stay alive in the series, only to fall short. 6-5 Pens
Keenan probably shouldn't have benched his best players for large periods of time during the finals, but that's hindsight. He probably could have started Hasek instead of Belfour after that devastating loss in game 1, but that's hindsight too. 3 of the games were decided by 1 goal and the other by 2. It was a close series despite the sweep. Pittsburgh was stacked: Mario Lemiuex, Ron Francis, Bryan Trottier, Jaromir Jagr, Kevin Stevens, Rick Tocchet, Larry Murphy, Barraso in net, etc...while the Hawks were as gritty as they come: Jeremy Roenick, Steve Larmer, Chris Chelios, Steve Smith, Dirk Graham, Brent Sutter, Jocelyn Lemiuex, Michel Goulet, Greg Gilbert (a fourth line with Stu Grimson and Mike Peluso on either side of Mike Hudson), etc...Belfour and Hasek between the pipes.