As Jim Harbaugh prepares to take the field Thursday night for the first time on a college sideline since 2010, those who have encountered the quirky coach share anecdotes from their encounters with him.

While Harbaugh coached at Stanford, he faced Rick Neuheisel and UCLA on occasion. Neuheisel, now a CBS analyst, was on the Dan Patrick Show Thursday and was asked about a famous handshake incident he had with Harbaugh.

“They won 24-16 and we’re driving trying to get the tying score and he comes across to shake hands — and this is before he did it to (former Detroit Lions coach) Jim Schwartz, by the way — and he just slaps my hand and (says) ‘What’d you think about that, Ricky?'” Neuheisel said. “And I’m like, Did that just happen? I mean who does that?”

Neuheisel didn’t say anything to Harbaugh. He was in shock.

“I was literally like, Who does that? “He gets so lost in the competition. I mean, he competes at everything.”

In a Bleacher Report feature story published earlier this week, Frank Beamer recalled an awkward moment with Harbaugh when Stanford played Virginia Tech in the 2010 Orange Bowl. A few days before the game, Beamer and Harbaugh were at an event in Miami and started talking.

“Jim says over and over how much respect he has for Georgia Tech. He must have said it five times. I’m just looking at him like, ‘Are you serious?’ “Finally, I’m joking with him and I say I can’t wait to tell my team that you called us Georgia Tech. Because, you know, we’re Virginia Tech.”

Harbaugh then gave Beamer a firey, uncomfortable stare.

“Well,” Harbaugh said, according to Beamer. “I can’t wait to tell my players that you said you were going to play Samford, not Stanford!” He then turned and walked away.

The Harbaugh era at Michigan begins Thursday at 8:30 p.m. ET when the Wolverines face Utah on the road.