Jason Alexander -- I Didn't Know Who Steinbrenner Was Before 'Seinfeld' Gig

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Steinbrenner as 'The Boss' became huge pop icon - Newsday

TIL that since Jason Alexander (George Costanza) is a trained Broadway singer, he had to re-record the famous George answering machine song because he sung it too well; Larry David wanted him

Was George Steinbrenner ever on Seinfeld? - Quora

Jason Alexander -- I Didn't Know Who Steinbrenner Was Before 'Seinfeld' Gig

The Seinfeld Character You Are Based On Your Zodiac Sign

Seinfeld Jason Alexander pays tribute to Jerry Stiller who played his father on the hit show

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Jason Alexander -- I Didn't Know Who Steinbrenner Was Before 'Seinfeld' Gig

Jason Alexander -- I Didn't Know Who Steinbrenner Was Before 'Seinfeld' Gig

Jason Alexander -- I Didn't Know Who Steinbrenner Was Before 'Seinfeld' Gig

Dusty by Dusty Rhodes, Howard Brody, George Steinbrenner - Ebook

Orioles' Buck Showalter dishes on 'Seinfeld' taxes, offering a look at what IRS considers taxable income - Don't Mess With Taxes

All 169 'Seinfeld' Episodes, Ranked From Worst to Best