ST:TNG, Firstborn, Episode 721
Wrapping up Alexander's character. And by wrapping up, I mean not really resolving anything. Will he choose the path of the warrior? Will he make his father proud? Will the time paradox introduced by his late-life travels screw things up further as Alexander grows up to realize he met himself when he was young? Or, how would future Alexander known which of his past fathers to return to, given that Worf was switching between realities not 10 episodes prior?
... The Klingon bat'leth opera / street performance was pretty awesome, and something I'd expect to see during a Klingon holiday.
Also, I understand it's all about the firstborn son with Klingons, but does Worf not have any further children?