I didn't see a thread for this, so I figured I'd start one!
I thought I'd begin by asking - what are your favorite Silver Age Superman/Superman Family stories?
Here are mine:
The Battle with Bizarro (Superboy #68)
The Girl from Superman's Past (SM #129)
Superman's Return to Krypton (SM #141)
Superboy's Big Brother (Superboy #89)
The Showdown between Luthor and Superman (SM #164)
Superman Under the Red Sun (AC #300)