It only stands to reason that The Great One has three of the top five playoff performances of all-time. Mario Lemieux barely edges out Gretzky after I adjusted his Percentage of Team Goals. Le Magnifique had his hand broken by an Adam Graves slash in game two of the second round and missed the next five matches. The Pens tallied 22 goals in those games, so in the games Mario played they scored 61 times meaning he was in on well over half the goals when he was in the lineup. Babe Dye of the 1922 Toronto St.Pats is a somewhat suprising number three, having been in on 62% of his squad's goals that post season. Stan Mikita rounds out the top six with a fantastic 21 points in 12 games enroute to losing the Cup to Toronto. The ill-stricken 1919 final between Seattle and Les Canadiens is represented by Frank Foyston's 9 goals in 4 games and Newsy Lalonde's 18 points in 9 games including the NHL portion of his playoffs. A few other suprises are Fleming Mackell with 19 points in a losing effort in 1958 and Marcel Bonin with 15 points for the victorious Habs in 1959.
The next list is of Great Playoffs by players who did NOT make it to the Final of that season.
Perhaps even more impressive are the efforts by Rick Middleton and Barry Pederson for the '83 Bruins. Tallying 33 and 32 points respectively in 17 games, both in on over half the Bruins goals. Middleton holds the records for most points in a series with 19 in 7 round games against Buffalo, and most points by a player not advancing to the final.
Finally, I decided to find some other various fantastic playoffs from around the hockey world. I checked some of the top junior post seasons as well as WHA and AHL.