Peter Mueller is a guy I remember who retired way too early
. I thought he was retired, but it looks like he has mostly been playing in Europe since 2013. He did make a brief comeback to North America when he played with the P-Bruins in 2016-17.
What I do remember about Mueller is that he had lots of concussions, including a pair that caused him to miss the 2010-11 NHL season. He ended up playing 297 games in the NHL, which I thought was kinda low. But considering the amount of time he missed due to concussions and other injuries, maybe it isn't all that low.
This past season, he played for HC Kometa Brno of the Czech Extraliga and was a point per game player, scoring 45 points in 43 games.
Although I didn't remember that today was his birthday (happy 31st b-day), I remember Peter Mueller.