Using some of a windfall sent their way in by the man who is now the U.S. Treasury secretary, a group of Wall Street veterans are getting to see at least one of their investments pay off.

Warren Buffett, who generally knows a deal when he sees one, announced yesterday that his company, Berkshire Hathaway, would invest $5 billion in beleaguered Goldman Sachs.

Robert Steven Kaplan may be the equivalent of a fill-in head coach who takes his team to the Super Bowl and wins.

Kendrick R. Wilson III is a man with friends in high places. Beyond that, his resume includes graduation from Dartmouth College and Harvard Business School, plus work at Goldman Sachs.

Old professors don’t fade away. They join the ExxonMobil board of directors.

Say “Bueller, Bueller” in a monotone and just about everybody in the free world knows you’re echoing Ben Stein as the drone of an economics teacher in the movie Ferris Bueller’s Day Off.

But while Ferris gave himself a day off, it would seem that Stein just can’t stop doing something.

Lawyer, actor, author, economist, television performer, talk show guest, presidential adviser, Stein, 63, belongs in the multi-tasking hall of fame.

Talk about a firm for all seasons.

We’ve already shown that investment bank Goldman Sachs is a power in politics and in finance, sending its executives off to presidential cabinets and elective offices and to lead other companies.

And now there’s proof that Goldman can hit home runs in baseball as well.

Word is out that two of Goldman’s managing directors, John Mallory and Gerald J. Cardinale, helped bring the New York Yankees and superstar Alex “A Rod” Rodriguez back into contract talks.

It would seem they did what Scott Boras, Rodriguez’s agent and one of the most powerful and vilified men in sports, couldn’t do. Though, rest assured, Boras will make money on this deal.

The appointment of John Thain to head troubled Merrill Lynch proves, yet again, the long reach of Goldman Sachs.

Thain, currently CEO of the New York Stock Exchange, began his career as an investment banker at Goldman. He went on to become co-president and co-chief operating officer.

As the New York Times reports, Thain was chosen not only for his success at the exchange, but also for his background at Goldman.