JESSICA TUCK
(SHARPAY & RYAN'S MOM)

Previously in: TV shows like One Life to Live, Grey's Anatomy and Everwood

Her Yoga Scene with Lucas: "The two of us actually got up into headstands on our own. We were very proud of that! They aren't trick headstands! The only hard part was we're both so fair-skinned that the blood would rush to our heads, and by the end of the take we'd look like two tomatoes!"

BART JOHNSON
(TROY'S DAD)

Previously in: CSI: Miami, JAG and Saved by the Bell: The New Class

On Being Recognized by HSM Fans: "I get these looks from kids. One will ask for an autograph and then a mob surrounds me. They say the same thing every time: 'Do you have Zac's phone number?'"

ALYSON REED
(MS. DARBUS)

Previously in: TV shows like Boston Legal

Her Real-Life Teaching Gig: Reed tutors at-risk L.A. kids as part of the Peace4Kids charity. "Zac and Vanessa met with the kids for me. Two of the kids fell on the floor, and one of the girls said, 'I'm happy now.'"

MARK TAYLOR
(MR. FULTON)

Previously in: TV shows like Seinfeld and the Disney Channel movie Eddie's Million Dollar Cook-Off

His HSM2 Blooper: As the manager of the country club, "I had to run across the golf course and jump in the golf cart. I hit the cart's canopy and cut my head open. I hit my head later doing something else. It became a running joke."