This might not be substantial enough for a fanpost, but I couldn't get the formatting to work well as a post in a Clips thread....
Hockey reference has lists of the players who have most often led the league, finished top-3, top-5, etc in various statistical categories. I pulled a couple of the goal scoring lists, but then also looked at the age at which those players last accomplished the feat, just for some context on Ovi's potential future at the top of the league in goals.
Leading the NHL in goals:
Mean Age Last - 30
Median Age Last - 29
8 out of the 13 led the NHL while older than age 27.
Top-3 in the NHL in goals:
Mean Age Last - 31
Median Age Last - 31
15 of 19 finished top-3 in the NHL while older than 27
Also notable that every single player on these lists who is not an active player is in the Hall of Fame.