Over his previous 283 games (which date back to the start of the 2009 season) entering today, Rockies SS Troy Tulowitzki batted .305/.382/.568 with 162-games averages of 35 doubles, 7 triples, 37 HRs, 114 RBI and 18 SB. The most similar batter through age 25, according to baseball-reference.com, is Ernie Banks. That's not too shabby.
Furthermore, of the 10 most similar batters, five are in the Hall of Fame* and a few others might join that group: Banks*, Vern Stephens, Gary Carter*, Nomar Garciaparra, Joe Torre, Yogi Berra*, Hanley Ramirez, Tony Lazzeri*, Derek Jeter and Joe Gordon*.
Plus, Tulowitzki is among the best, if not the best, with the glove at SS.
Since the start of the 2009 season, the WAR leaders, according to Fangraphs, are: Albert Pujols (15.9), Ryan Zimmerman (14.4), Evan Longoria (14.1), Joe Mauer (13.0), Joey Votto (13.0) and Tulowitzki (13.0). Aside from noting that Ryan Zimmerman is sadly undernoticed because he plays in DC, you can see there are 3 MVPs and a ROY in that group and Tulowitzki is the lone middle infielder.
Tulowitzki, who today against the Mets is 3-for-4 with his 6th HR as I type this, is must-see TV.