One Tree Hill On HBO Max: 10 Famous Guest Stars You May Not Remember

"People always leave." This sentiment, courtesy of One Tree Hill's Peyton Sawyer, remains as true today as when she first spoke it in 2005.

It also applies to TV shows, like One Tree Hill, which ended its far-too-brief nine-season run in 2012. But there's an important second part of Peyton's quote: "Sometimes, they come back." And just like that, One Tree Hill is already available to watch on HBO Max!

If you're settling in to watch this iconic teen drama for the first time since its original run (2003–2012), there's a good chance you've forgotten just how many famous faces popped up in Tree Hill, including a few then-unknown actors who are now household names.

Read on for our breakdown of 10 familiar names you can expect to encounter during watch, then drop a comment with your favorite famous appearances.

Long before moving into Carrington Manor as Dynasty's Cristal 3.0, Alonso briefly called Tree Hill home in Season 2 as Anna, the younger sister of Michael Copon's Felix.

One of Peters' first TV gigs was playing — we kid you not — Jack Daniels, a more-than-friend of Ashley Rickards' Sam in Season 6.

Wait a minute. We're supposed to believe that this sweet, sweet man fathered Dan Scott? If we didn't see him on screen in Season 1, we wouldn't accept it.

Dawson Leery in Tree Hill? Honestly, we couldn't imagine a better person to play the director of Lucas' movie in Season 6.

Before wolfing out in Bon Temps, the future True Blood star settled down in Tree Hill, playing bartender Owen midway through the show's fun.

When Peyton started her own record label in Season 5, her talent roster was a mixed bag — one that included the former Mr. Britney Spears.

The singer's two-episode guest stint in Season 6 — which was merely a ruse to make Brooke's then-ex Julian jealous — was totally worth it just for Mia's unforgettable line, "Stay out of it, Nick Lachey."

The future Legend of Tomorrow played himself in Season 2, conducting one seriously awkward interview between Haley and [shudders] Chris Keller.

Now one of the most ubiquitous faces on The CW, List was also a WB favorite, popping up in a Season 3 episode as teen model Solaris Coburn.

Shortly after starring in 2009's Oscar-nominated movie The Blind Side, Aaron dropped by Tree Hill for a memorable Season 8 arc as one of Nathan's classmates.