You know, I saw this thread, and Rafalski was the first name that popped into my head, but I thought "nah, I'm missing someone obvious, the guys are going to come along in a minute and remind me."
But yeah, Rafalski. Its a truism that Lidstrom was always complemented best by another PMD - he had a fair few over the years - from Coffey to Murphy to Olaufsson to Schneider to White. But he also won Norris trophies partnered with the likes of Dmitri Bykov and Mathieu Dandenault.
So getting a legit top pairing PMD, who also happened to be a righty? Yeah, I think Rafalski goes down as our best ever FA signing.
HM to Osgood 2.0 - signed for a pittance and backstopped us to consecutive finals appearances.