All the obvious ones - Scenes from an Italian Restaurant, Captain Jack, Miami 2017, half of Streetlife Serenade! Slightly less obvious:
Say Goodbye to Hollywood
One of the first Billy Joel tracks i was aware of - still love it
Until the Night
Movin' Out (Anthony's Song) - love the 50's Italian American feel of it
Brilliant artist, underrated (except for having sold more records than nearly any other US artist?!), but always awkward, unsure of himself (even though he manages 'attitude' on many songs), a 'troubled soul' (even at the height of his immense fame) - fame and stardom never sat easily upon him (some of this probably relates to why he was such a good artist / lyricist). [this is probably just me spouting a load of bollocks - please ignore]
Love some of his stuff after Songs in the Attic but, for me, that was the pinnacle. Got the odd bootleg (1974 / 1977), but would love to see more footage of earlier concerts (if it exists - I'm sure I've trawled You Tube a few times [- found some - 1976!]).