Inspired by the Best bar songs thread, what are the songs that you must sing along to?
I think I have the #1 with Drift Away
Can anyone top that?
SSG Schwartz
Good-Bye, Earl
At first, I was afraid…
…I was petrified…
SSG Schwartz
A long long time ago,
I can still remember how that music used to make me smile…
There’s something wrong with anyone who doesn’t sing “Take me out to the ballgame” when at a ball game.
We don’t need no water, let the motherfu – what?
It’s nine o’clock on a Saturday…
Rock ‘n’ Roll Pt 2!!
Early in the morning…Rising to the street…
I don’t cry, when my dog runs away, I don’t get angry at the bills I have to pay…
Well I woke up Sunday morning, with no way to hold my head that didn’t hurt . . .
Seconded “take me out to the ballgame” especially if you’re watching the Cubs.
“Happy Birthday” is another one that you might end up in hell for not-singing.
“Summer Nights” from the Grease soundtrack.
“Bohemian Rhapsody” by Queen. Well, maybe you just have to bang your head to the part where you have to bang your head.
Jerusalem
Here comes Johnny…
…and it’s off to the rodeo…
God Save The Queen. 
There is a house in New Orleans…
I met her in a in bar in old Soho …
Actually, this is a timely thread for me, as I am putting together a folder of Drinking with Friends songs to play on the guitar. Most of the above are on the list already, but I am looking for lots more ideas.
Si
Busted flat in New Orleans and heading for the trains
Luck, be a lady tonight
"Paradise by the Dashboard Light"
Every bar or party or wedding I’ve been to where that song is played, everyone starts singing when it comes on.
I never thought it could be a regional thing until my husband said his co-worker went to a wedding in Northern New York (where I grew up) and told him to ask me if it’s normal for everyone to break into song, “like it’s a musical”.
My response was, “What? It’s not normal in Albany?” 
A couple more:
"Summer Lovin’ " from Grease
“New York, New York”